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CoinDesk is Looking to do an Interview with any Bitcoin Miners who Switched to Peercoin After the Halving. Please Check Here if this Applies to you or Anyone you Know.

CoinDesk is Looking to do an Interview with any Bitcoin Miners who Switched to Peercoin After the Halving. Please Check Here if this Applies to you or Anyone you Know. submitted by Sentinelrv to peercoin [link] [comments]

Gridcoin 5.0.0.0-Mandatory "Fern" Release

https://github.com/gridcoin-community/Gridcoin-Research/releases/tag/5.0.0.0
Finally! After over ten months of development and testing, "Fern" has arrived! This is a whopper. 240 pull requests merged. Essentially a complete rewrite that was started with the scraper (the "neural net" rewrite) in "Denise" has now been completed. Practically the ENTIRE Gridcoin specific codebase resting on top of the vanilla Bitcoin/Peercoin/Blackcoin vanilla PoS code has been rewritten. This removes the team requirement at last (see below), although there are many other important improvements besides that.
Fern was a monumental undertaking. We had to encode all of the old rules active for the v10 block protocol in new code and ensure that the new code was 100% compatible. This had to be done in such a way as to clear out all of the old spaghetti and ring-fence it with tightly controlled class implementations. We then wrote an entirely new, simplified ruleset for research rewards and reengineered contracts (which includes beacon management, polls, and voting) using properly classed code. The fundamentals of Gridcoin with this release are now on a very sound and maintainable footing, and the developers believe the codebase as updated here will serve as the fundamental basis for Gridcoin's future roadmap.
We have been testing this for MONTHS on testnet in various stages. The v10 (legacy) compatibility code has been running on testnet continuously as it was developed to ensure compatibility with existing nodes. During the last few months, we have done two private testnet forks and then the full public testnet testing for v11 code (the new protocol which is what Fern implements). The developers have also been running non-staking "sentinel" nodes on mainnet with this code to verify that the consensus rules are problem-free for the legacy compatibility code on the broader mainnet. We believe this amount of testing is going to result in a smooth rollout.
Given the amount of changes in Fern, I am presenting TWO changelogs below. One is high level, which summarizes the most significant changes in the protocol. The second changelog is the detailed one in the usual format, and gives you an inkling of the size of this release.

Highlights

Protocol

Note that the protocol changes will not become active until we cross the hard-fork transition height to v11, which has been set at 2053000. Given current average block spacing, this should happen around October 4, about one month from now.
Note that to get all of the beacons in the network on the new protocol, we are requiring ALL beacons to be validated. A two week (14 day) grace period is provided by the code, starting at the time of the transition height, for people currently holding a beacon to validate the beacon and prevent it from expiring. That means that EVERY CRUNCHER must advertise and validate their beacon AFTER the v11 transition (around Oct 4th) and BEFORE October 18th (or more precisely, 14 days from the actual date of the v11 transition). If you do not advertise and validate your beacon by this time, your beacon will expire and you will stop earning research rewards until you advertise and validate a new beacon. This process has been made much easier by a brand new beacon "wizard" that helps manage beacon advertisements and renewals. Once a beacon has been validated and is a v11 protocol beacon, the normal 180 day expiration rules apply. Note, however, that the 180 day expiration on research rewards has been removed with the Fern update. This means that while your beacon might expire after 180 days, your earned research rewards will be retained and can be claimed by advertising a beacon with the same CPID and going through the validation process again. In other words, you do not lose any earned research rewards if you do not stake a block within 180 days and keep your beacon up-to-date.
The transition height is also when the team requirement will be relaxed for the network.

GUI

Besides the beacon wizard, there are a number of improvements to the GUI, including new UI transaction types (and icons) for staking the superblock, sidestake sends, beacon advertisement, voting, poll creation, and transactions with a message. The main screen has been revamped with a better summary section, and better status icons. Several changes under the hood have improved GUI performance. And finally, the diagnostics have been revamped.

Blockchain

The wallet sync speed has been DRASTICALLY improved. A decent machine with a good network connection should be able to sync the entire mainnet blockchain in less than 4 hours. A fast machine with a really fast network connection and a good SSD can do it in about 2.5 hours. One of our goals was to reduce or eliminate the reliance on snapshots for mainnet, and I think we have accomplished that goal with the new sync speed. We have also streamlined the in-memory structures for the blockchain which shaves some memory use.
There are so many goodies here it is hard to summarize them all.
I would like to thank all of the contributors to this release, but especially thank @cyrossignol, whose incredible contributions formed the backbone of this release. I would also like to pay special thanks to @barton2526, @caraka, and @Quezacoatl1, who tirelessly helped during the testing and polishing phase on testnet with testing and repeated builds for all architectures.
The developers are proud to present this release to the community and we believe this represents the starting point for a true renaissance for Gridcoin!

Summary Changelog

Accrual

Changed

Most significantly, nodes calculate research rewards directly from the magnitudes in EACH superblock between stakes instead of using a two- or three- point average based on a CPID's current magnitude and the magnitude for the CPID when it last staked. For those long-timers in the community, this has been referred to as "Superblock Windows," and was first done in proof-of-concept form by @denravonska.

Removed

Beacons

Added

Changed

Removed

Unaltered

As a reminder:

Superblocks

Added

Changed

Removed

Voting

Added

Changed

Removed

Detailed Changelog

[5.0.0.0] 2020-09-03, mandatory, "Fern"

Added

Changed

Removed

Fixed

submitted by jamescowens to gridcoin [link] [comments]

Removed comments/submissions for /u/Environmental_Rate_3

Hi Environmental_Rate_3, you're not shadowbanned, but 29 of your most recent 129 comments/submissions were removed (either automatically or by human moderators).

Comments:

fwpf3kg in Bitcoin on 02 Jul 20 (1pts):
Antminer S19 Pro for $2300? WOW
https://halvmining.com/product/antminer-s19-pro-110ths/
fwopk3h in NiceHash on 02 Jul 20 (1pts):
I'm also planning to order 4 units. Until now the best offer is here: https://halvmining.com/product/antminer-z15/
They also offer free shipping.

Submissions:

hjy800 in BitcoinAUS on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjy7v8 in CryptoCurrencyTrading on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjy7hq in BitcoinSerious on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjy6s5 in vertcoin on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjy6lz in CoinBase on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjy64q in dashpay on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjxhrv in BitcoinCA on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjxhoy in CryptoCurrency on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjxhmm in CryptoMarkets on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjxhlr in litecoin on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjxhj2 in bitcoin_uncensored on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjxhh3 in BitcoinMarkets on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjxf8k in BitcoinBeginners on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjxezc in BitcoinUK on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjxeww in CryptoCurrencies on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjxdar in btc on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjxd5u in bitcoincashSV on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjxd2k in bitcoinsv on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjx84f in myriadcoin on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjx814 in LCCofficial on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjx6o1 in peercoin on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjx6jy in Digibyte on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjx6iq in CryptoCurrency on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjx421 in acoin on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjx40a in Crown on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjx3ra in curecoin on 02 Jul 20 (1pts):
One of the lowest price for an Antminer S19 PRO but even if it's only $2,200, it is still worth it? Considering that cryptomarket will see a new ATH, it is still a good idea to invest in miners?
hjvqox in Horizen on 02 Jul 20 (1pts):
Is This Miner Really Making $700/Month Costing Only $2,300?
I'm a bot. My home is at /CommentRemovalChecker - check if your posts have been removed! (How to use)
Help us expose and stand up to social media bias and censorship!
submitted by RemovedCommentsBot to CommentRemovalChecker [link] [comments]

Failure, Chaos, & Bad Decisions: Why Dash's Horrible 2019 Means It Won't Survive 2020

I. Failure
In 2019, LATAM scammers ripped off Dash's treasury for 1000s of coins while providiing fake adoption statistics and embezzling money intended to save poor starving Venezuelan babies.
In 2019, Dash continued its free fall in marketcap rank, plunging to 27 from a high of 3. Once 5 times Monero's marketcap, Dash is by global free market consensus now valued at less than 50% of Monero, and may soon succumb to DogeCoin, a joke currency based on a dead 2013 meme. Measrued against the standard for altcoins, the once-hopeful 2 ETH for 1 Dash rate has surrendered unconditionally to Dash-breaking bearwhales - 1 Dash is worth less than 1/3 of an ETH now.
In 2019, Dash shills tried changing the subject from the "existential crisis" caused by DCG's failed Evolution Roadmap to other coins' cryptowinter vacations or fake & gamed metrics like tx/day, ignoring the obvious fact that Dash's singularly weak fundamentals and price collapsed in terms of Bitcoin, gold, fiat, and all other Top 25 altcoins.
In 2019, Dash shamefully abandoned tried-and-true Nakamoto Consensus with a cheap, gimmicky "Chainlocks" version of Peercoin's good old-fashioned checkpoints.
In 2019, Dash Core's chosen PR firm, Shift Communications, was a huge disappointment as it failed to engage the community, mitigate public relations disasters like MooCowMoo, or direct attention to EvoNet Platform's Open House. Dash Core also suffered the humiliation of being forced to de-endorse their own Shift Communication proposal, asking MNOs to vote down yet another money-wasting, bloated-corporation-imitating Core brainchild.
In 2019, Dash's identity as "Shitcoin of the year" was confirmed after being called out as a scam by the Crypto Vigilante Group due to the instamine, centralized mangement+control, and slow+broken privacy.
In 2019, Dash's support from Jeff Berwick's Dollar Vigilante Group turned very bearish to to their increased awareness of Dash's instamine and broken privacy.
In 2019, Dash was listed by Coinbase, raising hopes the Number might Go Up. But nobody actually cared about Dash on Coinbase, so nothing happened afterwards to change the market's opinion that Dash is worth less than a cold sack of puke.
In 2019, Dash's PrivateSend feature-cum-liability was broken by crypto research specialist u/Flenst, just as many exchanges were delisting Dash beause of its prior marketing under the old Darkcoin brand.
II Chaos
In 2019, every week wealthy Masternode owners dumped their 7200 "free" Dash, without returning anything for it to Dash's primary buyers. As the compounded Instamine Masternode poopulation grew, the market's ability to bear that overhead simply imploded.
In 2019, Dash went from weak to weaker as falling prices and severe reputation damage thanks to Macrochip & Moocowmoo resulted in budget shortfalls for Core Group Inc, intensifing toxic conflict over who must suffer additional austerity measures. Meanwhile Dash's competitors had great years and their devs wrote AND SHIPPED amazing code, such as Cardano releasing its (absolute madhouse of an) Incentivized Shelley Staking Testnet, Monero putting RandomX into production, and Decred adding state-of-the-art CoinShuffle++.
In 2019, DASH became a nightmare of change discussion and negativity. Instead of an Evolution product demo at the Open House, CEO Ryan Taylor plopped out a FUD turd and then proceded to roll around in it while all 15 people watching recoiled in horror and disgust. Markets hate uncertainty, so Dash Core's confusing new mission of endless scope creep, bikeshedding, and self re-invention only exacerbated existing negative investor sentiment.
III Bad Decisions
In 2019, Dash's increasinly desperate and centralized management+control (AKA spork-key hodler) entity, DCG, having lost hope in ever being competitive with successfull PoW-backed hard money cryptoassets like BTC/LTC/XMR, annouced a shocking, narrative-abandoning pivot to exploring Proof Of Stake options (as well as stripping X11 miners of their fair share of coinbase asset allocation).
In 2019, Dash's CEO ruined the years-overdue Evolution Open House by inciting a massive, controversial discussion after unilaterally declaring Dash is "overpaying" for Nakamoto Consensus PoW security.
In 2019, Dash's long-awaited Evolution release Open House featured no actual product demo as Liz's embarrassingly cringe EvoNet slideshow openly annouced Evolution has devolved into a Zero-Calorie Nothingburger with Vaporware Fries and Lite Ketchup.
In 2019, Dash's established coinbase reward allocation and PoW/PoSe consensus mechanism degenerated into a discussion of which Calvinhash Protocol[1] would fix Dash's massive technical and cultural debt problems, thereby making its Number Go Up.
[1] Calvinhash is a protocol invented by Evan at Dash Labs during an especially intense and lavishly provisioned Psytrance party "research" experience/experiment. Calvinhash has no rules; the miners, stakers, and Instamined DCG Masternodes make up their own rules as they go along, ensureing no Calvinhash proof-of-work, block size limit, consensus mechanism, or block reward is like another. 
submitted by henrygeorgist to DashUncensored [link] [comments]

What Is Staking: The Ultimate Beginner’s Guide

What Is Staking: The Ultimate Beginner’s Guide
Staking means you are holding your cryptocurrency funds in a wallet and thus support the functionality of a blockchain system. Stakeholders lock their cryptos in their wallets. In return, they are rewarded by the network.

Proof-of-Stake versus Proof-of-Work.

What Is Proof Of Stake

To clear up the idea of staking, we should explain the Proof-of-Stake (PoS) consensus mechanism. PoS and its versions are widely used in many blockchain networks.
The pioneers of PoS were (most likely) Sunny King and Scott Nadal. They were the first to describe and implement this idea for the crypto project Peercoin (PPC). Originally, its blockchain was using a hybrid of PoW and PoS. It made the network less dependent on the alternative protocol and attracted more participants. They were miners who came to compete for a reward.

Delegated Proof-of-Stake in BitShares versus Proof-of-Work in Bitcoin.

Delegated Proof Of Stake

Two years later, Daniel Larimer, a prominent software developer, and crypto entrepreneur introduced a modified version of PoS. Its name was Delegated Proof of Stake (DPoS). The first network to apply it was Bitshares. Larimer also launched EOS and Steem. Both projects adopted the Delegated Proof of Stake protocol for their blockchains.
What is the key feature of DPoS? This mechanism allows all network users to ‘convert’ their crypto holdings into votes. These votes are used to elect trusted witnesses (‘delegates’). They will manage the blockchain on your behalf. The delegates validate the transactions and make sure the network functions as it should. The weight of your vote depends on how big your stake is. As a stakeholder, you get a regular reward for keeping your crypto in the network.

DPoS Pros

The DPoS model addresses the important problems of PoS and PoW blockchains. First of all, it’s the scalability issue. DPoS improves network capacity by increasing the speed of transaction processing. It is possible because the DPoS model allows reaching consensus much faster, as it needs fewer nodes to validate a transaction. On the dark side, Delegate Proof of Stake usage promotes centralization: a DPoS network relies on a limited group of delegates for its operation.

How Staking Works

As we said earlier, staking means holding cryptocurrency or tokens to support a network operation and getting a reward for it. Naturally, this process is typical for blockchains using the PoS protocol or any of its versions.
Unlike PoW, this protocol does not rely on miners who validate blocks by doing ‘work’. This work consists of solving math puzzles using increasingly powerful mining hardware. Instead, the mining power of any network participant depends on how many coins they commit to stake. It allows a PoS-based blockchain to avoid usage of ASICs and other equipment that consumes a great amount of electricity.

Advantages Of Staking

The bigger is the amount you stake, the better are your chances to become the validator for the next block and grab the reward. The PoS model saves you a lot of money. You don’t have to invest in expensive mining hardware and cooling equipment. Also, you don’t have to pay huge electricity bills every month. You still spend some money, but it’s a direct cryptocurrency investment. Every PoS network features its own ‘staking currency’.
The increased scalability, ensured by staking, is one of the main reasons why the Ethereum plans to move to this model in 2020 when it adopts the Casper protocol.
There are networks that prefer DPoS. In this model, you may use other network participants to signal your support for some event. It means you delegate decision making to the nodes you trust.
In fact, these delegates are responsible for handling the blockchain, as they deal with the issues of major importance. They play a key role in consensus achievement and make management decisions.

Consensus protocols compared: PoW, PoS and DPoS.

Network Inflation

There are blockchains who pay a staking reward in the form of a fixed percentage, the so-called ‘inflation rate’. The purpose is to persuade more people to stake their coins. It’s like a bank encouraging you to keep your money with them and not at home.
Until recently, Stellar was a typical example of such a scheme. Their fixed inflation rate was 1%. Every week, the network used to distribute ‘inflation money’ among the holders, who kept their funds in the staking pool. The main pro of this model is that you get a fixed bonus regularly.
For example, a Stellar user who was holding 10,000 XLM for 1 year, could expect the reward of 100 XLM. This information was open to all the users, helping them to decide in favor of staking. It motivated the people who preferred a moderate but predictable reward to a big but random one.
In the 4th quarter of 2019, Stellar abandoned the inflation scheme.

Staking Pool

An idea behind staking pools is simple. To form a pool, many network stakeholders combine together. It increases their collective odds of validating a new block and getting rewarded for it. Like in a PoW mining pool, the reward is proportionately split among all the participants. The money you put in, the bigger is your share.
Pooling might be the best staking solution if your network has a high entry barrier. In practice, it means that you have to contribute a large amount of money to enter, but you cannot afford it alone. Note, that running a pool is not free, as there are maintenance and development costs. As a result, you often have to pay a ‘membership fee’ to the pool providers. Normally, it’s a fixed percentage of your reward share.
Besides, pools may offer additional benefits related to withdrawal time, minimum balance, etc. It attracts new participants and results in a greater degree of decentralization of the network.

Cold Staking

Cold staking is when you stake your crypto using a cold (hardware) wallet. Such a wallet has no connection to the Internet. There are networks that let you stake the funds kept in cold storage. The biggest benefit of cold staking is that your funds are 100% safe. For large stakeholders, it’s the top priority. If a stakeholder takes the crypto out of the cold wallet, their rewards are discontinued.

Future Of Staking

The number of users seeking to contribute their assets to participate in blockchain management and decision-making grows. It means staking becomes popular. To meet the demand, the entry process is becoming more user-friendly. Accordingly, more people will be taking an active part in the development of their blockchain ecosystems.

Conclusion

In conclusion, staking is an innovative investment tool. It can compete with traditional ones in terms of stability. In terms of assets growth potential, it’s superior to them.
P.S. Hope you found this article interesting and useful. If you want to read more articles on crypto, finance, and blockchain check out our blog.
submitted by EX-SCUDO to CryptoCurrencies [link] [comments]

How to assign custom flair via InstaMod

Hey there /CryptoCurrency! I'm the developer of the bot InstaMod which is responsible for the automatic flair on this subreddit. You can read more about how InstaMod works on this subreddit here, but today I'm here to talk about assigning custom flair.
If you are in the top 10% of contributors on this subreddit, then you have the ability to overwrite your automatic flair assign a custom one. Users who achieve this status are notified via a PM from InstaMod with instructions on how to go about applying that flair. However, recently there was a bug which resulted in users not being able to assign flair, so I'd like to give everyone a refresher on how to correctly go about this process now that it's been resolved.
This link is a pre-formatted PM message which will allow you to assign custom flair. Simply fill out the flair and CSS sections (or leave them blank) and the bot will promptly respond with a confirmation that your flair was updated. If you do not have the permissions to apply custom flair then the bot will reply informing you of that. Here is a list of the current CSS options available:
Bitcoin, BitcoinShares, Bitcoin Cash fan, Dogecoin, Ethereum, Litecoin, Monero, Dash, NEM, ETC, Ripple, Factom, NEO, OMG, ARK, SIA, Peercoin, Nxt, Namecoin, Waves, Iota, ZCASH, Altcoiner, Developer, Miner, Trader, Investor, Observer, Student, Entrepreneur, Analyst, Moon, Gentleman, Fan
If you have any questions, suggestions, or issues feel free to let me know in the comments. There are some additional features that I hope to add into InstaMod in the near future so stay tuned!
submitted by shimmyjimmy97 to CryptoCurrency [link] [comments]

Proof Of Stake

Proof Of Stake
https://preview.redd.it/7nfccptuway41.png?width=1200&format=png&auto=webp&s=0103130266549ba8ae21e63d837b67528e39f59c
In my previous article, I have covered one of the most famous consensus mechanism i.e Proof of Work. But like any technology, that protocol also has a certain drawback, and to overcome these issues another protocol has been developed i.e Proof Of Stake.
Proof Of Stake, as the name implies depends upon the stake of a validator. Like Miners in PoW, PoS consists of a group of validators. These validators use a pseudo-random algorithm to select a node that will act as a validator for the next block. The validator was decided based on a combination of different factors which includes the staking age and the node’s wealth. This means that the more coin one has, the more mining power he or she will have. Thus unlike PoW which is quite a power extensive because it depends upon solving a complex computational puzzle to decide the next block, the validation and generation of next block in PoS solely depend on the owner's stake. In Proof of Stake systems, the blocks that were mined are termed as ‘forged’.
This algorithm was introduced in 2011 with the idea to solve the problems with Proof of Work. Though both these algorithm is used to achieve consensus in the blockchain network, the underlying process to reach the final goal is different.
Some of the crypto coins like Nxt (NXT), Blackcoin, ShadowCoin, and Peercoin (PPC) uses the PoS method. Ethereum (ETH) is also planning to switch to a PoS system.
How do PoS works?
The blockchain network consists of a series of a node which acts as a miner (Forge in this case). Any network user who wants to participate in the forging activity needs to stake a certain amount of coin into the network. One can do this by sending a special transaction that will lock up their base cryptocurrency(in Ethereum's case, ether). The stake size determines the chances of a node to be selected as the next validator who will forge the next block. The bigger the stake, the higher the chances.
The newly created node which got selected to forge the next block checks the validity of the transactions in the block. If the transactions are valid, it then signs the block and adds it to the blockchain network. The node receives the transaction fees that are associated with the transactions in the block as a reward.
In the case when the node doesn’t want to serve as a forger, it can withdraw its stake along with the rewards earned. The network verifies and releases the node once it successfully checks that the node has not been involved in any malicious activity.
Advantages of using PoS:-
o Enhanced security.
o Energy-efficient.
o Reduced risk of centralization.
Forge selection method:-
Two unique methods are being used in case there is a requirement of not selecting the node with the maximum stake. These are:-
o Randomized Block Selection
In this method, a node gets selected as the validators which are having a combination of the lowest hash value and the highest stake. The account which will receive the right to forge a block can be easily predicted by each node because the stakes are public
o Coin Age Selection method
In this method, a node gets selected as the validators who have kept their stake for a longer period. The Coin age is calculated by multiplying the number of days the coins have been reserved as stake by the number of coins that are available as stake.
Coin age=no.of days coined staked *total no of coins staked
The coin age of a node has been reset to zero once it forged a block. To forge another block, the node has to wait for a certain period. Hence this method prevents the large stake nodes from dominating the blockchain network.
Different types of PoS
Proof Of Stake can be categorized into two parts:-
o Chain-based proof of stake
This algorithm randomly selects a validator during the time slot (e.g. every period of 10 seconds might be a time slot) available to create a block, and then assign it an authority to create a block with the constraint that the block must point to some previous block. Generally, it points to the last block of the longest chain. Hence over time, the blocks converge into one growing chain.
Blockchain projects that implemented this model are Nxt, Peercoin, Ardor.
o BFT-style proof of stake
This model offers ‘consistency’. Here the randomly chosen validators decide whether a particular block can be included in the chain or not at the end of each round. This type could be favored for a more “permission” approach. In this case, the consensus on a block does not depend on the length or size of the chain.
Blockchain projects that implemented this model are Neo, Tendermint, Polkadot, Hyperledge Fabric.
How it reduces the risk of a Network attack?
Since this model works on the concept of the stake owned by the validator, thus to effectively control the network and approve fraudulent transactions, a node has to own a majority stake in the network (also known as the 51% attack) which is quite impractical because if a hacker tries to purchase 51% of the total number of coins, the market reacts by the fast price appreciation.
Also, wherever the network detects any fraudulent transaction, not only the forger node loses a part of its stake but is also restricted from participating in future activities. Till the time the cost of staking is higher than the reward, the validator is at a loss in case of attempting fraud.
With the “Casper” upgrade underway for Ethereum, Proof-of-Stake (POS) model is gaining more popularity among other Blockchain consensus designs. With this upgrade, the protocols will set certain criteria that will identify a bad validator. The bad validator would lose their deposit if proven, thus making this model more secure.
Read more: Understanding different Consensus Mechanisms, Proof Of Work Explained
#bitcoin #ethereum #consensus #pos #blockchain
submitted by RumaDas to u/RumaDas [link] [comments]

Understanding different Consensus Mechanisms

Understanding different Consensus Mechanisms

https://preview.redd.it/a8khq1zpfdx41.png?width=1920&format=png&auto=webp&s=a572570acbf0ab6a07dcf8af86009b6917295935
The BlockChain network consists of a series of nodes that form a distributed architecture. These nodes need to be aligned and run synchronously to maintain security in the network. Thus the concept of Consensus is devised to maintain harmony in the blockchain network.
A Consensus mechanism can be defined as a process where all the nodes abide by the same rules or protocols. These consensus mechanisms are very important for a blockchain network to function properly. The network is shared by numerous users who do transactions. These transactions are further validated to add it to the block and then to the chain. Thus the transactions, as well as the network, need to be regularly checked to maintain the safety and security of the network. Thus a good consensus mechanism or protocol is mandatory to protect the network from various attacks.
These protocols should be efficient, secure, reliable, and real-time so that they can check the authenticity of transactions and to which the network participants commonly agreed to the outcome.
Different Consensus Mechanism
There are different kinds of consensus mechanism which are based on different principles.
https://preview.redd.it/92dw63bifdx41.jpg?width=595&format=pjpg&auto=webp&s=d461c4099a4e3aaa3c4cae69eb7c535dd21c6193
1. Proof of Work (PoW)
Proof of Work was the first-ever consensus mechanism and was adopted by Bitcoin. It became very famous after that and was later implemented on Ethereum, Litecoin, etc. The algorithm is based on solving a complex mathematical puzzle which is very hard to crack. The node which solves it then broadcasts the outcome for verification. Once verified, the blocks are added to the network. This algorithm also rewards the miner who solves the puzzle.
Though PoW has provided the desired security which is very much needed to make the network bulletproof against hackers it was criticized over the years due to its high energy and resource requirements which are needed to solve the complex mathematical puzzles. But this is also the reason why the Bitcoin network is so valuable.
2. Proof of Stake (PoS)
This algorithm is based upon the stake of validators. The validators are decided based on a combination of different factors which includes the staking age and the node’s wealth. Any network user who wants to participate in the forging activity stake a certain amount of coin into the network. This is done by sending a special transaction that will lock up their base cryptocurrency (in Ethereum's case, ether). The stake size determines the chances of a node to be selected as the next validator who will forge the next block. The bigger the stake, the higher the chances.
This algorithm was introduced in 2011 with the idea to solve the problems with Proof of Work.
Some of the crypto coins like Nxt (NXT), Blackcoin, ShadowCoin, and Peercoin (PPC) use the PoS method. Ethereum (ETH) is also switching to a PoS system.
Advantages:
· Enhanced Security
· More decentralization
· Less energy
· Higher transparency
3. Proof of Authority (PoA)
In the PoA consensus model, the identity is chosen as the form of stake rather than staking tokens. It is an enhanced version of Proof of Stake. A group of validators is already chosen as the authority. Their task is to check and validate all the newly added identities, validate transactions, and blocks to add to the network. To ensure efficiency and security in the network the validator group is usually kept small (~25 or less).
PoA was proposed by a group of developers in March 2017 (coined by Gavin Wood) as a blockchain-based on the Ethereum protocol. It was developed with the idea to solve the problem of spam attacks on Ethereum’s Ropsten test network. The new network was named Kovan. It is the main test network for all Ethereum users today.
Projects using PoA: Kovan, Rinkeby, TomoChain, Swarm City, Go Chain, etc.
Characteristics of a PoA Network:-
· Less energy consumption as compared to PoW.
· No communication is required to reach the consensus between the nodes.
· Network operation is independent of the number of available genuine nodes.
· The chance of a node to become a forge depends upon both its stake and overall holding.
4. DPOS (Delegated Proof of Stake)
In 2014, Dan Larimer developed the Delegated Proof of Stake (DPoS) consensus algorithm. This algorithm is considered more efficient than the preceding PoS mechanism.
A DPoS algorithm is based on a voting system where stakeholders cast their votes to a third-party to outsource the work. These delegates are referred to as witnesses and are responsible for the generation and validation of new blocks. The voting power is proportional to the number of coins each user holds. Also, it varies from project to project. Each delegate presents an individual proposal when asking for votes. The rewards received by the delegates are proportionally shared with their respective electors.
Since a DPoS system is based on a voting system and is maintained by the voters, hence it is directly dependent on the delegates’ reputation. Due to this, the delegates are motivated to be honest and efficient, or else they will get voted out.
Cryptocurrency projects that make use of DPoS consensus algorithm- Bitshares, Steem, Ark, and Lisk.
The main advantage of DPOS is that it is more scalable i.e it can process more transactions per second (TPS) as compared to POW and PoS.
5. Hybrid PoW/PoS
The idea behind developing a hybrid Proof of Work and Proof of Stake systems is to maximize the advantages and minimize the disadvantage of both approaches (PoW/PoS).
This method allows mining and staking to create a balance between those outside the community (the miners) and those inside the community (the stakeholders).In this model, the PoW miners create new blocks that contain transactions to be added to the blockchain. As these blocks have been created, the PoS miners vote on whether or not to confirm them. PoS miners stake a portion of their tokens; the larger the stake, greater will be the voting power. However, rather than counting the total vote count to check the validity of the newly created block, the hybrid consensus mechanism randomly chooses 5 'votes' to determine the validity; if 3 out of the 5 chosen votes are positive, the block is confirmed and added to the blockchain. As a reward, PoW miners receive 60% of the block reward, PoS miners receive 30%, and the remaining 10% is dedicated to developmental efforts.
By using PoS voting, these systems protect the network from a 51% attack because it provides an additional layer of verification.
6. Delegated Byzantine Fault Tolerance (dBFT)
This consensus algorithm was invented by the developers of NEO, one of the world's largest platforms for building and deploying decentralized applications (dApps). The method is very similar to PoS,i.e vote to choose delegates and speakers.
All NEO token holders (ordinary nodes) have the right to vote for delegates irrespective of the number of tokens that they hold.
Any token holder can become a delegate if he fulfills the following criteria:-
· Reliable internet connection.
· Specific equipment.
· 1,000 GAS.
A speaker is chosen randomly out of these delegates. These speakers are expected to keep track of all the transactions and record them on the network. A new block is formed from the transactions that need to be validated. Once formed, the speaker sends the proposal of verifications to the elected delegates. If more than two-thirds of the delegates reach a consensus and validate it, the block is added to the blockchain.
Let me know in the comments what you feel about this article. Do read my other articles where I dig deeper into various technical aspects of Blockchain.
submitted by RumaDas to u/RumaDas [link] [comments]

What Is Staking: The Ultimate Beginner’s Guide

What Is Staking: The Ultimate Beginner’s Guide
Staking means you are holding your cryptocurrency funds in a wallet and thus support the functionality of a blockchain system. Stakeholders lock their cryptos in their wallets. In return, they are rewarded by the network.

Proof-of-Stake versus Proof-of-Work.

What Is Proof Of Stake

To clear up the idea of staking, we should explain the Proof-of-Stake (PoS) consensus mechanism. PoS and its versions are widely used in many blockchain networks.
The pioneers of PoS were (most likely) Sunny King and Scott Nadal. They were the first to describe and implement this idea for the crypto project Peercoin (PPC). Originally, its blockchain was using a hybrid of PoW and PoS. It made the network less dependent on the alternative protocol and attracted more participants. They were miners who came to compete for a reward.

Delegated Proof-of-Stake in BitShares versus Proof-of-Work in Bitcoin.

Delegated Proof Of Stake

Two years later, Daniel Larimer, a prominent software developer, and crypto entrepreneur introduced a modified version of PoS. Its name was Delegated Proof of Stake (DPoS). The first network to apply it was Bitshares. Larimer also launched EOS and Steem. Both projects adopted the Delegated Proof of Stake protocol for their blockchains.
What is the key feature of DPoS? This mechanism allows all network users to ‘convert’ their crypto holdings into votes. These votes are used to elect trusted witnesses (‘delegates’). They will manage the blockchain on your behalf. The delegates validate the transactions and make sure the network functions as it should. The weight of your vote depends on how big your stake is. As a stakeholder, you get a regular reward for keeping your crypto in the network.

DPoS Pros

The DPoS model addresses the important problems of PoS and PoW blockchains. First of all, it’s the scalability issue. DPoS improves network capacity by increasing the speed of transaction processing. It is possible because the DPoS model allows reaching consensus much faster, as it needs fewer nodes to validate a transaction. On the dark side, Delegate Proof of Stake usage promotes centralization: a DPoS network relies on a limited group of delegates for its operation.

How Staking Works

As we said earlier, staking means holding cryptocurrency or tokens to support a network operation and getting a reward for it. Naturally, this process is typical for blockchains using the PoS protocol or any of its versions.
Unlike PoW, this protocol does not rely on miners who validate blocks by doing ‘work’. This work consists of solving math puzzles using increasingly powerful mining hardware. Instead, the mining power of any network participant depends on how many coins they commit to stake. It allows a PoS-based blockchain to avoid usage of ASICs and other equipment that consumes a great amount of electricity.

Advantages Of Staking

The bigger is the amount you stake, the better are your chances to become the validator for the next block and grab the reward. The PoS model saves you a lot of money. You don’t have to invest in expensive mining hardware and cooling equipment. Also, you don’t have to pay huge electricity bills every month. You still spend some money, but it’s a direct cryptocurrency investment. Every PoS network features its own ‘staking currency’.
The increased scalability, ensured by staking, is one of the main reasons why the Ethereum plans to move to this model in 2020 when it adopts the Casper protocol.
There are networks that prefer DPoS. In this model, you may use other network participants to signal your support for some event. It means you delegate decision making to the nodes you trust.
In fact, these delegates are responsible for handling the blockchain, as they deal with the issues of major importance. They play a key role in consensus achievement and make management decisions.

Consensus protocols compared: PoW, PoS and DPoS.

Network Inflation

There are blockchains who pay a staking reward in the form of a fixed percentage, the so-called ‘inflation rate’. The purpose is to persuade more people to stake their coins. It’s like a bank encouraging you to keep your money with them and not at home.
Until recently, Stellar was a typical example of such a scheme. Their fixed inflation rate was 1%. Every week, the network used to distribute ‘inflation money’ among the holders, who kept their funds in the staking pool. The main pro of this model is that you get a fixed bonus regularly.
For example, a Stellar user who was holding 10,000 XLM for 1 year, could expect the reward of 100 XLM. This information was open to all the users, helping them to decide in favor of staking. It motivated the people who preferred a moderate but predictable reward to a big but random one.
In the 4th quarter of 2019, Stellar abandoned the inflation scheme.

Staking Pool

An idea behind staking pools is simple. To form a pool, many network stakeholders combine together. It increases their collective odds of validating a new block and getting rewarded for it. Like in a PoW mining pool, the reward is proportionately split among all the participants. The money you put in, the bigger is your share.
Pooling might be the best staking solution if your network has a high entry barrier. In practice, it means that you have to contribute a large amount of money to enter, but you cannot afford it alone. Note, that running a pool is not free, as there are maintenance and development costs. As a result, you often have to pay a ‘membership fee’ to the pool providers. Normally, it’s a fixed percentage of your reward share.
Besides, pools may offer additional benefits related to withdrawal time, minimum balance, etc. It attracts new participants and results in a greater degree of decentralization of the network.

Cold Staking

Cold staking is when you stake your crypto using a cold (hardware) wallet. Such a wallet has no connection to the Internet. There are networks that let you stake the funds kept in cold storage. The biggest benefit of cold staking is that your funds are 100% safe. For large stakeholders, it’s the top priority. If a stakeholder takes the crypto out of the cold wallet, their rewards are discontinued.

Future Of Staking

The number of users seeking to contribute their assets to participate in blockchain management and decision-making grows. It means staking becomes popular. To meet the demand, the entry process is becoming more user-friendly. Accordingly, more people will be taking an active part in the development of their blockchain ecosystems.

Conclusion

In conclusion, staking is an innovative investment tool. It can compete with traditional ones in terms of stability. In terms of assets growth potential, it’s superior to them.
P.S. Hope you found this article interesting and useful. If you want to read more articles on crypto, finance, and blockchain check out our blog.
submitted by EX-SCUDO to CryptoCurrencyTrading [link] [comments]

What Is Staking: The Ultimate Beginner’s Guide

What Is Staking: The Ultimate Beginner’s Guide
Staking means you are holding your cryptocurrency funds in a wallet and thus support the functionality of a blockchain system. Stakeholders lock their cryptos in their wallets. In return, they are rewarded by the network.

Proof-of-Stake versus Proof-of-Work.

What Is Proof Of Stake

To clear up the idea of staking, we should explain the Proof-of-Stake (PoS) consensus mechanism. PoS and its versions are widely used in many blockchain networks.
The pioneers of PoS were (most likely) Sunny King and Scott Nadal. They were the first to describe and implement this idea for the crypto project Peercoin (PPC). Originally, its blockchain was using a hybrid of PoW and PoS. It made the network less dependent on the alternative protocol and attracted more participants. They were miners who came to compete for a reward.

Delegated Proof-of-Stake in BitShares versus Proof-of-Work in Bitcoin.

Delegated Proof Of Stake

Two years later, Daniel Larimer, a prominent software developer, and crypto entrepreneur introduced a modified version of PoS. Its name was Delegated Proof of Stake (DPoS). The first network to apply it was Bitshares. Larimer also launched EOS and Steem. Both projects adopted the Delegated Proof of Stake protocol for their blockchains.
What is the key feature of DPoS? This mechanism allows all network users to ‘convert’ their crypto holdings into votes. These votes are used to elect trusted witnesses (‘delegates’). They will manage the blockchain on your behalf. The delegates validate the transactions and make sure the network functions as it should. The weight of your vote depends on how big your stake is. As a stakeholder, you get a regular reward for keeping your crypto in the network.

DPoS Pros

The DPoS model addresses the important problems of PoS and PoW blockchains. First of all, it’s the scalability issue. DPoS improves network capacity by increasing the speed of transaction processing. It is possible because the DPoS model allows reaching consensus much faster, as it needs fewer nodes to validate a transaction. On the dark side, Delegate Proof of Stake usage promotes centralization: a DPoS network relies on a limited group of delegates for its operation.

How Staking Works

As we said earlier, staking means holding cryptocurrency or tokens to support a network operation and getting a reward for it. Naturally, this process is typical for blockchains using the PoS protocol or any of its versions.
Unlike PoW, this protocol does not rely on miners who validate blocks by doing ‘work’. This work consists of solving math puzzles using increasingly powerful mining hardware. Instead, the mining power of any network participant depends on how many coins they commit to stake. It allows a PoS-based blockchain to avoid usage of ASICs and other equipment that consumes a great amount of electricity.

Advantages Of Staking

The bigger is the amount you stake, the better are your chances to become the validator for the next block and grab the reward. The PoS model saves you a lot of money. You don’t have to invest in expensive mining hardware and cooling equipment. Also, you don’t have to pay huge electricity bills every month. You still spend some money, but it’s a direct cryptocurrency investment. Every PoS network features its own ‘staking currency’.
The increased scalability, ensured by staking, is one of the main reasons why the Ethereum plans to move to this model in 2020 when it adopts the Casper protocol.
There are networks that prefer DPoS. In this model, you may use other network participants to signal your support for some event. It means you delegate decision making to the nodes you trust.
In fact, these delegates are responsible for handling the blockchain, as they deal with the issues of major importance. They play a key role in consensus achievement and make management decisions.

Consensus protocols compared: PoW, PoS and DPoS.

Network Inflation

There are blockchains who pay a staking reward in the form of a fixed percentage, the so-called ‘inflation rate’. The purpose is to persuade more people to stake their coins. It’s like a bank encouraging you to keep your money with them and not at home.
Until recently, Stellar was a typical example of such a scheme. Their fixed inflation rate was 1%. Every week, the network used to distribute ‘inflation money’ among the holders, who kept their funds in the staking pool. The main pro of this model is that you get a fixed bonus regularly.
For example, a Stellar user who was holding 10,000 XLM for 1 year, could expect the reward of 100 XLM. This information was open to all the users, helping them to decide in favor of staking. It motivated the people who preferred a moderate but predictable reward to a big but random one.
In the 4th quarter of 2019, Stellar abandoned the inflation scheme.

Staking Pool

An idea behind staking pools is simple. To form a pool, many network stakeholders combine together. It increases their collective odds of validating a new block and getting rewarded for it. Like in a PoW mining pool, the reward is proportionately split among all the participants. The money you put in, the bigger is your share.
Pooling might be the best staking solution if your network has a high entry barrier. In practice, it means that you have to contribute a large amount of money to enter, but you cannot afford it alone. Note, that running a pool is not free, as there are maintenance and development costs. As a result, you often have to pay a ‘membership fee’ to the pool providers. Normally, it’s a fixed percentage of your reward share.
Besides, pools may offer additional benefits related to withdrawal time, minimum balance, etc. It attracts new participants and results in a greater degree of decentralization of the network.

Cold Staking

Cold staking is when you stake your crypto using a cold (hardware) wallet. Such a wallet has no connection to the Internet. There are networks that let you stake the funds kept in cold storage. The biggest benefit of cold staking is that your funds are 100% safe. For large stakeholders, it’s the top priority. If a stakeholder takes the crypto out of the cold wallet, their rewards are discontinued.

Future Of Staking

The number of users seeking to contribute their assets to participate in blockchain management and decision-making grows. It means staking becomes popular. To meet the demand, the entry process is becoming more user-friendly. Accordingly, more people will be taking an active part in the development of their blockchain ecosystems.

Conclusion

In conclusion, staking is an innovative investment tool. It can compete with traditional ones in terms of stability. In terms of assets growth potential, it’s superior to them.

P.S. Hope you found this article interesting and useful. If you want to read more articles on crypto, finance, and blockchain check out our blog.
submitted by EX-SCUDO to CryptoMarkets [link] [comments]

What Is Staking: The Ultimate Beginner’s Guide

What Is Staking: The Ultimate Beginner’s Guide
Staking means you are holding your cryptocurrency funds in a wallet and thus support the functionality of a blockchain system. Stakeholders lock their cryptos in their wallets. In return, they are rewarded by the network.

Proof-of-Stake versus Proof-of-Work.

What Is Proof Of Stake

To clear up the idea of staking, we should explain the Proof-of-Stake (PoS) consensus mechanism. PoS and its versions are widely used in many blockchain networks.
The pioneers of PoS were (most likely) Sunny King and Scott Nadal. They were the first to describe and implement this idea for the crypto project Peercoin (PPC). Originally, its blockchain was using a hybrid of PoW and PoS. It made the network less dependent on the alternative protocol and attracted more participants. They were miners who came to compete for a reward.


Delegated Proof-of-Stake in BitShares versus Proof-of-Work in Bitcoin.

Delegated Proof Of Stake

Two years later, Daniel Larimer, a prominent software developer, and crypto entrepreneur introduced a modified version of PoS. Its name was Delegated Proof of Stake (DPoS). The first network to apply it was Bitshares. Larimer also launched EOS and Steem. Both projects adopted the Delegated Proof of Stake protocol for their blockchains.
What is the key feature of DPoS? This mechanism allows all network users to ‘convert’ their crypto holdings into votes. These votes are used to elect trusted witnesses (‘delegates’). They will manage the blockchain on your behalf. The delegates validate the transactions and make sure the network functions as it should. The weight of your vote depends on how big your stake is. As a stakeholder, you get a regular reward for keeping your crypto in the network.

DPoS Pros

The DPoS model addresses the important problems of PoS and PoW blockchains. First of all, it’s the scalability issue. DPoS improves network capacity by increasing the speed of transaction processing. It is possible because the DPoS model allows reaching consensus much faster, as it needs fewer nodes to validate a transaction. On the dark side, Delegate Proof of Stake usage promotes centralization: a DPoS network relies on a limited group of delegates for its operation.

How Staking Works

As we said earlier, staking means holding cryptocurrency or tokens to support a network operation and getting a reward for it. Naturally, this process is typical for blockchains using the PoS protocol or any of its versions.
Unlike PoW, this protocol does not rely on miners who validate blocks by doing ‘work’. This work consists of solving math puzzles using increasingly powerful mining hardware. Instead, the mining power of any network participant depends on how many coins they commit to stake. It allows a PoS-based blockchain to avoid usage of ASICs and other equipment that consumes a great amount of electricity.

Advantages Of Staking

The bigger is the amount you stake, the better are your chances to become the validator for the next block and grab the reward. The PoS model saves you a lot of money. You don’t have to invest in expensive mining hardware and cooling equipment. Also, you don’t have to pay huge electricity bills every month. You still spend some money, but it’s a direct cryptocurrency investment. Every PoS network features its own ‘staking currency’.
The increased scalability, ensured by staking, is one of the main reasons why the Ethereum plans to move to this model in 2020 when it adopts the Casper protocol.
There are networks that prefer DPoS. In this model, you may use other network participants to signal your support for some event. It means you delegate decision making to the nodes you trust.
In fact, these delegates are responsible for handling the blockchain, as they deal with the issues of major importance. They play a key role in consensus achievement and make management decisions.

Consensus protocols compared: PoW, PoS and DPoS.

Network Inflation

There are blockchains who pay a staking reward in the form of a fixed percentage, the so-called ‘inflation rate’. The purpose is to persuade more people to stake their coins. It’s like a bank encouraging you to keep your money with them and not at home.
Until recently, Stellar was a typical example of such a scheme. Their fixed inflation rate was 1%. Every week, the network used to distribute ‘inflation money’ among the holders, who kept their funds in the staking pool. The main pro of this model is that you get a fixed bonus regularly.
For example, a Stellar user who was holding 10,000 XLM for 1 year, could expect the reward of 100 XLM. This information was open to all the users, helping them to decide in favor of staking. It motivated the people who preferred a moderate but predictable reward to a big but random one.
In the 4th quarter of 2019, Stellar abandoned the inflation scheme.

Staking Pool

An idea behind staking pools is simple. To form a pool, many network stakeholders combine together. It increases their collective odds of validating a new block and getting rewarded for it. Like in a PoW mining pool, the reward is proportionately split among all the participants. The money you put in, the bigger is your share.
Pooling might be the best staking solution if your network has a high entry barrier. In practice, it means that you have to contribute a large amount of money to enter, but you cannot afford it alone. Note, that running a pool is not free, as there are maintenance and development costs. As a result, you often have to pay a ‘membership fee’ to the pool providers. Normally, it’s a fixed percentage of your reward share.
Besides, pools may offer additional benefits related to withdrawal time, minimum balance, etc. It attracts new participants and results in a greater degree of decentralization of the network.

Cold Staking

Cold staking is when you stake your crypto using a cold (hardware) wallet. Such a wallet has no connection to the Internet. There are networks that let you stake the funds kept in cold storage. The biggest benefit of cold staking is that your funds are 100% safe. For large stakeholders, it’s the top priority. If a stakeholder takes the crypto out of the cold wallet, their rewards are discontinued.

Future Of Staking

The number of users seeking to contribute their assets to participate in blockchain management and decision-making grows. It means staking becomes popular. To meet the demand, the entry process is becoming more user-friendly. Accordingly, more people will be taking an active part in the development of their blockchain ecosystems.

Conclusion

In conclusion, staking is an innovative investment tool. It can compete with traditional ones in terms of stability. In terms of assets growth potential, it’s superior to them.
P.S. Hope you found this article interesting and useful. If you want to read more articles on crypto, finance, and blockchain check out our blog.
submitted by EX-SCUDO to ethtrader [link] [comments]

Attention: Bitmain is currently performing a large scam

Bitmain has just announced a new mining machine, the antminer x3, that is designed to mine cryptonight algorithm cryptocurrencies, such as Monero. It is extremely efficient and profitable. A vega 56 video card has on average 1850 h/s at 190wh power usage. The x3 has 220000 h/s (118x stronger) at 550w power usage. It is then 41.08x more efficient.
As can be seen, this is a money machine. Costing $12,000 to have it shipped 15-31 may would net you at today's difficult over $5.3k per month.
Enter the most important part. Seems good to be true, right? It is. This machine is being released to the public because information that asics were being developed/already used leaked to monero developers, and naturally they worked on implementing a fix for that, in order to keep Monero's anti-asic and centralization nature. This month along with other things, code will be pushed to fix this issue and make asics not functional for monero. Every 6 month network upgrade will also have small tweaks in the algorithm to ensure no asic is ever developed or at least profitable to pull.
Bitmain is only selling these machines because they knew monero was adding this feature on the upcoming fork. They then rushed to sell the machines they were using to people who don't know about this.
On their site;
2. There are financial risks associated with mining cryptocurrencies. These risks can be related to changes in exchange rate of the cryptocurrency or to changes in the algorithm that is used to mine the cryptocurrency. Please deliberate well before making a purchase because we will not accept any requests for refund for orders of this batch.
In other words: if a network upgrade for cryptonight coins ever happen (it will happen), we can't be responsible for this. You're on your own and don't dare requesting a refund, we never issue these (quick off-topic: I personally know this very well because bitmain didn't refund me on my s7s even when I didn't receive the miners)
The shipping date is 2 months after the fork. These machines will be completely and absolutely useless. The biggest cryptonight coin will already have forked. Other cryptonight coins already signaled they will also push fix to this issue. Even if one or two CN coins don't implement anti-asic stance, you'll be left with shitcoins to mine. Imagine buying SHA256 asic for bitcoin only to have it available to mine peercoin only by the time you receive them.
tl,dr: Don't buy bitmain's x3. They asic mined monero and now that this will not be possible anymore they want to dump their machines on you.
submitted by enceladu to CryptoCurrency [link] [comments]

Nuv mining | Can You Creat a Ton Of Money Via Bitcoin Mining?

Consumers, investors, fanatics or even technology smart geeks may be wonderful Bitcoin enthusiasts. They can even follow all Bitcoin information as well as have a solitary inquiry in mind. People might simply want to figure out, whether an optimistic future can be taken of mining different cryptocurrencies. Well, it's not a trick or stunning paid announcement. Mining of cryptocurrencies can be a smart step, aside from being a financially rewarding one. And also the appeal of Bitcoin market can not be denied as well. The Bitcoin boom of 2013 and its huge rise in value brought about its reputation. The roller-coaster ride of Bitcoin as well as the other cryptocurrencies, called as Altcoins, discovered a location of reputation in each dictionary of the world. Digital currencies have actually earned adequate direct exposure, and a mining occupation including them can really supply earnings. The miners nevertheless, have to have three points - adequate time, adequate money and an unequaled perseverance.
nuv mining
The initial hurdle involves the option of a cryptocurrency. A fanatic can go on to mine Bitcoin. Or instead pick to extract other readily available cryptocurrencies, Dogecoin, Litecoin or Peercoin. In other words, miners have a lot of options. Comparable to stock, even cryptocurrencies have classifications, blue chip or dime. Mining the blue chip category is commonly associated with security, integrity and a greater amount of profit. Financial on these attributes, individuals are much more inclined towards Bitcoin mining, even if it includes utilizing an enormous computer power. Altcoins, on the other hand, can also offer a fair gain as algorithms are less complex. However with Altcoins, simplicity of mining as well as the potential gains are not always proportional.
nuvmining
Hardware is an element that begins to disclose the real examination. Also a techno-savvy miner can not refute the Bitcoin problem linked to brand-new block generation. The point is to decide upon the computing power to be used. For Bitcoins, algorithms have come to be difficult to hash. Thus, GPUs of gigantic power combined with high-end RAMs and also reputable hard disk drives have to do all the task. The point is to hash at a quick price. Several high-end GPUs running together can speed up block generation and also consequently the payouts. On the various other hand, picking an item of software could not be as tricky. Windows can be selected as the required OS, yet open-source Linux does a far better job. One more demand is a digital wallet. Extracted money have to be kept. One can keep it locally on hard-drive or remotely online. A miner just has to select wisely.
With hardware and software in position, the task of mining begins. A miner may do it all alone, as well as collect all advantages. However the gear has to be tremendously effective. So it's fairly doubtful. Mining pools appear to be a sensible solution as people team up to contribute hash power and makers. Thus coins obtain extracted at a great speed. Collaborating has its advantages; miners get their reasonable share. Multipool is an economical choice. If Altcoin mining is to be embarked on, Middlecoin should be the miner's choice. So with all the active ingredients in place, a profitable mining gear can start. First investment may seem overwhelming, however the earnings are worthwhile!
submitted by Nuvmining to u/Nuvmining [link] [comments]

Staking — The New Way to Earn Crypto for Free

Staking — The New Way to Earn Crypto for Free

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Airdrops are so 2017, free money was fun while it lasted but now when someone says free money in crypto, the first thoughts are scams and ponzi schemes. But in 2020, there is a way to earn free money, in a legitimate, common practice, and logical manner — staking.
Staking is the core concept behind the Proof-of-Stake (PoS) consensus protocol that is quickly becoming an industry standard throughout blockchain projects. PoS allows blockchains to scale effectively without compromising on security and resource efficiency. Projects that incorporate staking include aelf, Dash, EOS, Cosmos, Cardano, Dfinity and many others.

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PoW — Why change

First, let’s look at some of the issues facing Proof-of-Work (PoW) consensus that led to the development of PoS.
  1. Excessive energy consumption — In 2017, many concerns were raised over the amount of electricity used by the bitcoin network (Largest PoW blockchain). Since then the energy consumption has increased by over 400%, to the point where 1 single transaction on this network has the same carbon footprint of 736,722 Visa transactions or consumes the same amount of electricity as over 20 U.S. households.
  2. Varying Electricity Costs — The profit of any miner on the network is tied to two costs, the initial startup cost to obtain the hardware and infrastructure, and more critically, the running cost of said equipment in relation to electricity usage. Electricity costs can vary from fractions of a cent per kWh to over 50 cents (USD) and in some cases it is free. When a user may only be earning $0.40 USD per hour then this will clearly rule out certain demographics based purely on electricity costs, reducing the potential for complete decentralization.
  3. Reduced decentralization — Due to the high cost of the mining equipment, those with large financial bases setup mining farms, either for others to rent out individual miners or entirely for personal gains. This results in large demographic hotspots on the network reducing the decentralized aspect to a point where it no longer accomplishes this aspect.
  4. Conflicted interests — The requirements of running miners on the network are purely based on having possession of the hardware, electricity and internet connection. There are no limits to the amount a miner can earn, nor do they need to hold any stake in the network, and thus there is very little incentive for them to vote on upgrades that may benefit the network but reduce their rewards.
I want to take this moment to mention a potential benefit to PoW that I have not seen anyone mention previously. It is a very loose argument so don’t take this to heart too strongly.
Consistent Fiat Injection — The majority of miners will be paying for their electricity in fiat currency. At a conservative rate of $0.1 USD per kWh, the network currently uses 73.12 TWh per year. This equates to an average daily cost of over $20 million USD. This means every day around $20 million of fiat currency is effectively being injected into the bitcoin network. Although this concept is somewhat flawed in the sense that the same amount of bitcoin will be released each day regardless of how much is spent on electricity, I’m looking at this from the eyes of the miners, they are reducing their fiat bags and increasing their bitcoin bags. This change of bags is the essence of this point which will inevitably encourage crypto spending. If the bitcoin bags were increased but fiat bags did not decrease, then there would be less incentive to spend the bitcoin, as would see in a staking ecosystem.

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PoS Variations

Different approaches have been taken to tackle different issues the PoS protocol faces. Will Little has an excellent article explaining this and more in PoS, but let me take an excerpt from his piece to go through them:
  • Coin-age selection — Blockchains like Peercoin (the first PoS chain), start out with PoW to distribute the coins, use coin age to help prevent monopolization and 51% attacks (by setting a time range when the probability of being selected as a node is greatest), and implement checkpoints initially to prevent NoS problems.
  • Randomized block selection — Chains like NXT and Blackcoin also use checkpoints, but believe that coin-age discourages staking. After an initial distribution period (either via PoW or otherwise), these chains use algorithms to randomly select nodes that can create blocks.
  • Ethereum’s Casper protocol(s) — Being already widely distributed, Ethereum doesn’t have to worry about the initial distribution problem when/if it switches to PoS. Casper takes a more Byzantine Fault Tolerant (BFT) approach and will punish nodes by taking away (“slashing”) their stake if they do devious things. In addition, consensus is formed by a multi-round process where every randomly assigned node votes for a specific block during a round.
  • Delegated Proof-of-Stake (DPoS) — Invented by Dan Larimer and first used in Bitshares (and then in [aelf,] Steem, EOS, and many others), DPoS tackles potential PoS problems by having the community “elect” delegates that will run nodes to create and validate blocks. Bad behavior is then punished by the community simply out-voting the delegated nodes.
  • Delegated Byzantine Fault Tolerance (DBFT) — Similar to DPoS, the NEO community votes for (delegates) nodes, but instead of each node producing blocks and agreeing on consensus, only 2 out of 3 nodes need to agree on what goes in every block (acting more like bookkeepers than validators).
  • Tendermint — As a more sophisticated form of DBFT and a precursor to Casper, Jae Kwon introduced tendermint in 2014, which leverages dynamic validator sets, rotating leader elections, and voting power (i.e. weight) that is proportional to the self-funding and community allocation of tokens to a node (i.e. a “validator”).
  • Masternodes — First introduced by DASH, a masternode PoS system requires nodes to stake a minimum threshold of coins in order to qualify as a node. Often this comes with requirements to provide “service” to a network in the form of governance, special payment protocols, etc…
  • Proof of Importance (POI)NEM takes a slightly different approach by granting an “importance calculation” to masternodes staking at least 10,000 XEM. This POI system then rewards active nodes that act in a positive way over time to impact the community.
  • “Proof-of-X” — And finally, there is no lack of activity in the PoS world to come up with clever approaches and variants of staking (some are more elaborate than others). In addition to BFT protocols such as Honeybadger, Ouroboros, and Tezos, for further reading, also check out “Proof-of-”: Stake Anonymous, Storage, Stake Time, Stake Velocity, Activity, Burn, and Capacity.
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Earning Your Stake

In order to understand how one can earn money from these networks, I’ll break them down into 3 categories: Simple staking, Running nodes, and Voting.
Simple Staking - This is the simplest of the 3 methods and requires almost no action by the user. Certain networks will reward users by simply holding tokens in a specified wallet. These rewards are generally minimal but are the easiest way to earn.
Running a node - This method provides the greatest rewards but also requires the greatest action by the user and most likely will require ongoing maintenance. Generally speaking, networks will require nodes to stake a certain amount of tokens often amounting to thousands of dollars. In DPoS systems, these nodes must be voted in by other users on the network and must continue to provide confidence to their supporters. Some companies will setup nodes and allow users to participate by contributing to the minimum staking amount, with a similar concept to PoW mining pools.
Voting - This mechanism works hand in hand with running nodes in relation to DPoS networks. Users are encouraged to vote for their preferred nodes by staking tokens as votes. Each vote will unlock a small amount of rewards for each voter, the nodes are normally the ones to provide these rewards as a portion of their own reward for running a node.

Aelf’s DPoS system

The aelf consensus protocol utilizes a form of DPoS. There are two versions of nodes on the network, active nodes & backup nodes (official names yet to be announced). Active nodes run the network and produce the blocks, while the backup nodes complete minor tasks and are on standby should any active nodes go offline or act maliciously. These nodes are selected based upon their number of votes received. Initially the top 17 nodes will be selected as active nodes, while the next 100 will stand as the backup ones, each voting period each node may change position should they receive more or less votes than the previous period. In order to be considered as a node, one must stake a minimum amount of ELF tokens (yet to be announced).

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In order to participate as a voter, there is no minimum amount of tokens to be staked. When one stakes, their tokens will be locked for a designated amount of time, selected by the voter from the preset periods. If users pull their tokens out before this locked period has expired no rewards are received, but if they leave them locked for the entire time frame they will receive the set reward, and the tokens will be automatically rolled over into the next locked period. As a result, should a voter decide, once their votes are cast, they can continue to receive rewards without any further action needed.
Many projects have tackled with node rewards in order to make them fair, well incentivized but sustainable for everyone involved. Aelf has come up with a reward structure based on multiple variables with a basic income guaranteed for every node. Variables may include the number of re-elections, number of votes received, or other elements.
As the system matures, the number of active nodes will be increased, resulting in a more diverse and secure network.
Staking as a solution is a win-win-win for network creators, users and investors. It is a much more resource efficient and scalable protocol to secure blockchain networks while reducing the entry point for users to earn from the system.
submitted by Floris-Jan to aelfofficial [link] [comments]

Meet /u/InstaMod, the bot in charge of your flairs and more!

InstaMod: An Automoderator-like bot which allows moderators to create custom actions based on a user's account activity

FAQ

Bitcoin, Litecoin,Ethereum, Ripple, Dash, NEM, NEO, Iota, Monero, ETC, OMG, ZCASH, BitShares, Dogecoin, Factom, SIA, ARK, Peercoin, Namecoin, Nxt, Waves, Moon, Fan, Analyst, Gentleman, Trader, Observer, Developer, Altcoiner, Investor, Miner, Student, Entrepreneur, Pacifier

PM Commands

Custom Flair: Users who meet the specified criteria will receive a PM that looks like this. The link will open up a preformatted message which will look like this. Simply replace the capitalized text with whatever text you would like your flair to say. Do not change the subject or reply to the bot as if it were a real human. This is an automated process and the syntax must be correctly followed for it to function properly. If you have the proper permissions, please click here to open up the custom flair PM.

Additional Information

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Created by shimmyjimmy97

If you have any additional questions about the bot, please direct them to shimmyjimmy97. If you are interested in having this bot run on your subreddit, feel free to contact me and I'll be more than happy to discuss it with you.
submitted by shimmyjimmy97 to CryptoCurrency [link] [comments]

If you think you missed out on the internet craze then give Cryptocurrency a shot!

If You Idea You Missed Out On The Web Earnings Transformation Attempt CryptoCurrency
When the majority of people consider cryptocurrency they may too be considering puzzling currency. Really couple of individuals appear to understand what it is and for some factor everybody appears to be speaking about it as if they do. This report will ideally debunk all the elements of cryptocurrency so that by the time you're ended up reading you will have a respectable concept of what it is and what it's everything about.
You might discover that cryptocurrency is for you or you might not however a minimum of you'll have the ability to talk with a degree of certainty and understanding that others will not have.
There are lots of people who have actually currently reached millionaire status by handling cryptocurrency. Plainly there's a great deal of cash in this brand name brand-new market.
Cryptocurrency is electronic currency, brief and easy. Nevertheless, what's not so brief and basic is precisely how it comes to have worth. Check out our guide on how to sell btc to figure out how you can turn that beloved coin into cold hard cash.
Cryptocurrency is a digitized, virtual, decentralized currency produced by the application of cryptography, which, according to Merriam Webster dictionary, is the "digital encoding and decoding of info". Cryptography is the structure that makes debit cards, computer system banking and eCommerce systems possible.
Cryptocurrency isn't backed by banks; it's not backed by a federal government, however by an exceptionally complex plan of algorithms. Cryptocurrency is electrical power which is encoded into complicated strings of algorithms. What provides financial worth is their complexity and their security from hackers. The manner in which crypto currency is made is merely too hard to replicate.
Cryptocurrency remains in direct opposition to what is called fiat cash. Fiat cash is currency that gets its worth from federal government judgment or law. The dollar, the yen, and the Euro are all examples. Any currency that is specified as legal tender is fiat cash.
Unlike fiat cash, another part of what makes crypto currency important is that, like a product such as silver and gold, there's just a limited quantity of it. Just 21,000,000 of these very complicated algorithms were produced. No more, no less. It can't be changed by printing more of it, like a federal government printing more cash to pump up the system without support. Or by a bank changing a digital journal, something the Federal Reserve will advise banks to do to change for inflation.
Cryptocurrency is a method to acquire, offer, and invest that totally prevents both federal government oversight and banking systems tracking the motion of your cash. In a world economy that is destabilized, this system can end up being a steady force.
Cryptocurrency likewise offers you a good deal of privacy. Regrettably this can result in abuse by a criminal aspect utilizing crypto currency to their own ends simply as routine cash can be misused. Nevertheless, it can likewise keep the federal government from tracking your every purchase and attacking your individual privacy.
Cryptocurrency can be found in many kinds. Bitcoin was the very first and is the requirement from which all other cryptocurrencies pattern themselves. All are produced by careful alpha-numerical calculations from a complex coding tool. Some other cryptocurrencies are Litecoin, Namecoin, Peercoin, Dogecoin, and Worldcoin, among others. These are called altcoins as a generalized name. The costs of each are controlled by the supply of the particular cryptocurrency and the need that the marketplace has for that currency.
The method cryptocurrency is brought into presence is rather interesting. Unlike gold, which needs to be mined from the ground, cryptocurrency is simply an entry in a virtual journal which is saved in different computer systems all over the world. These entries need to be 'mined' utilizing mathematical algorithms. Private users or, most likely, a group of users run computational analysis to discover specific series of information, called blocks. The 'miners' discover information that produces a specific pattern to the cryptographic algorithm. At that point, it's used to the series, and they have actually discovered a block. After a comparable information series on the block compares with the algorithm, the block of information has actually been unencrypted. The miner gets a benefit of a particular quantity of cryptocurrency. As time goes on, the quantity of the benefit reduces as the cryptocurrency ends up being scarcer. Contributing to that, the intricacy of the algorithms in the look for brand-new blocks is likewise increased. Computationally, it ends up being more difficult to discover a coordinating series. Both of these circumstances come together to reduce the speed in which cryptocurrency is produced. This mimics the trouble and deficiency of mining a product like gold.
Now, anybody can be a miner. The pioneers of Bitcoin made the mining tool open source, so it's totally free to anybody. Nevertheless, the computer systems they utilize run 24 hr a day, 7 days a week. The algorithms are exceptionally intricate and the CPU is running complete tilt. Numerous users have actually specialized computer systems made particularly for mining cryptocurrency. Both the user and the specialized computer system are called miners.
Miners (the human ones) likewise keep journals of deals and serve as auditors, so that a coin isn't replicated in any method. This keeps the system from being hacked and from running amok. They're spent for this work by getting brand-new cryptocurrency weekly that they preserve their operation. They keep their cryptocurrency in specialized files on their computer systems or other individual gadgets. These files are called wallets.
submitted by AccomplishedWelder4 to cryptochat [link] [comments]

What coin is your "sleeper" coin that has a promising future?

Thank you all for sharing! A summary of results and findings to be posted here within 24 hours!
Update 9/2/17 (Not organized):
Mentions:
2 Tierion, 7 Vertcoin, 2 Pied Piper, 9 ARK, Binance Coin, 2 LoMoCoin, OMG, 17 District0x, 7 Monero, 8 IOTA, DeepOnion, 5 Agrello, 10 Factom, 1 Metal, *3 Nexus, NoLimitCoin (NLC2), Ember, 4 signatum, 4 Funfair, 3 Rise, groestlcoin (grs), bitquark, 2 bitquence (BQX), bitsend, 5 nav, datum, 2 0x exchange (zrx), 3 BAT, 2 Peercoin, 1 bytom, sys coin, 2 sia, 1 stox, 2 tenx, 2 decred, 3 ripple XRP, oxycoin, 4 OMG, 2 IOC, 3 ASCH, Oxycoin, 2 Lisk, 3 *Zcoin, 2 BLOCKNET, komodo, 2 pivx, game, mgo, linx, viacoin, xspec, qrl, voise, *bitbean, bitbay, 3 ubiq, 3 iconomi, 2 taas, bet, shift, crown, *singulardtv (sngls), myst, maidsafe, synereo, particl, 2 *cat, nem, lykke, *adex (adx), 2 verge (xvg), *raiblocks (XRB), suncontract (SNC), *diamond (DMD), mooncoin, *cloak, walton (WTC), counterparty (XCP), sickcoin, MEMETIC, wild beast block (WBB), civic, ponzi, biblepay, gene-chain, aragon, gulden, byteball, patientory, 2 stellar lumens (XLM), qtum, EOS, WBC, 23 skidoo, stealthcoin, digibyte, coss ico, dobbscoin, opus (OPT)
Tierion: FCT competitor Vertcoin: lightning network & Atomic swaps, longterm mining drama solution via asic resistance useful 3-5 years from now, ltc fork. "If I understood LN + atomic swaps correctly, I can see BTC users atomic swapping to the ridiculously cheap VTC chain to transfer their coins to the intended party, then that party swaps back to BTC later. I mean, this is what I would do if the fees made sense. While this might take away some utility from LTC, few people know about VTC, and the total of both coins (2 x 84 million) will never be enough for the world if you take future growth and adoption into consideration." - corpski Pied Piper: those guys fuck ark: easy way to build blockchain apps, no good marketing yet, so will be big after that Binance Coin: Binanc exchange's coin LomoCoin: Chinese pokemon go geocaching app with new v2.0 coming out OMG: Best way to spend your crypto, will be around despite success of any crypto *Agrello: Legal stuff Factom: Adopted and funded by bill gates, DHS, used in the real world, few other competitors with this much current use. probably slow but steady growth though with better utilization of blockchains. Metal: consistenly doubled ~every month, new signatum: "About to get PoS, a roadmap that is being quickly ticked through and constant development. Dedicated and fair. It's a literal steal right now and once people realise staking will just make money for them, the more holders and the less sellers, unlike now with many miners selling. It's reliable and honest, a fresh reality in the ICO scam filled marketplace. " -skeetskeet172 Nexus: "former spacex founders launching cube-sats around the world to decentralize the dectranlization" -Raynre + soon to boom after conference ~mid september Rise: lisk copy warnings district: "once the masses adopt and wrap their heads around the idea of ethereum and other app based platforms, they'll need a way to implement into real world applications. E-commerce, social platforms, blogs that pay directly for views, etc. DNT is paving a way for everyone (without programming knowledge) to take part in the decentralization world. In my opinion this is huge for the long run." - sdot123 *Bitquence: bring investments to the masses Nav: Polymorph and staking, risky but ambitious 61,000,000 limited supply, ~flavor of month in december. zrx: can't find a good reason why this decentralized exchange will succeed and purpose of the token? BAT: founder of javascript despite the sour ICO Peercoin: long long history of failures and innovation but not giving up bytom syscoin: merge mining with bitcoin tenx: omg partnership, few credit cards, backed by vitalik decred: open structure, governance, only vote for a hard fork ripple: $5+ trillion transferred using SWIFT, $50 mil FEDWIRE, 1.5 bil on CHIPS ASCH: any coding language side chain creation, very active big team, pending big exchange approval bitbean: due for name change soon, staking, funny/moniker name (bean) zcoin: better than zcash/monero once roadmap is done: better POW, incentivizd nodes, trustless setup, permanent anonymous addresses, faster times, currently only $35mil market cap, used bitcoin code, asic resistant bitbay: valued <5x sys coin competitor, novel rolling peg, pos, dedicated underdog dev who was screwed over by his own team shift: decentralize the web crown: digital commodities, and more, neither POS or POW but ATOMIC in 1 month CAT: Creating ethereum smart contracts visually raiblocks: is like IOTA, close to coming to bittrex, 0 transaction fees suncontract: buyign and selling electricity. Will eb used for solar market.. Really good cause! mooncoin: in one year cloak: closed source, said to be better than monero/dash when goes open source *walton: NEW, chinese site but patents and samsung vp on board, patents for integration of iot and rfid and blockchain, only one binance right now and will balloon afterwards, https://twitter.com/Waltonchain counterparty: extends bitcoin to create assets *MEME: blockchain secured images. but how do they afford image hosting costs? wild beast block PonziCoin: definitely not a ponzi scheme of sorts... biblepay: religion ftw gene chain: sleepiest sleeper of sleepers. a very very specific sue case in bioinformatics, made first node sale to a genomics lab and about to publish a paper soon. gulden: send money but every new user causes gulden value to go up. can buy with cash on website right now. ubiq: said to be throttled by bittrex/killed. *OPUS: NEW
submitted by mannanj to CryptoCurrency [link] [comments]

Bitcoin mining is a bit more than just number crunching

The charming cryptocurrency and the many ideas that surface in the minds of the observers typically surround couple of apparent concerns - how does it enter being and what about its flow? The response, nevertheless, is uncomplicated. Bitcoins need to be mined, in order to make the cryptocurrency exist in the Bitcoin market. The mystical developer of Bitcoin, Satoshi Nakamoto, imagined a method to exchange the important cryptocurrencies online, by getting rid of the need for any central organization. For Bitcoins, there's an alternative method to hold the essential records of the deal history of the whole blood circulation, and all this is handled through a decentralized way.
The journal that helps with the procedure is called the "blockchain". The essence of this journal may need lots of newsprint for appearing frequently at all popular Bitcoin news. Blockchain broadens every minute, existing on the makers associated with the big Bitcoin network. Individuals might question the credibility, even credibility, of these deals and their recordings into Blockchain. This too is nevertheless warranted, through the procedure of Bitcoin mining. Mining allows production of brand-new Bitcoin and assembling deals to the journal. Mining basically involves fixing of complex mathematical estimations, and the miners utilize enormous computing power to resolve it. The private or 'swimming pool' that resolves the puzzle, positions the subsequent block and wins a benefit too. And, how mining can prevent double-spending? Practically every 10 minutes, impressive deals are mined into a block. So, any disparity or illegitimacy is entirely dismissed.
For Bitcoins, mining is not mentioned in a conventional sense of the term. Bitcoins are mined by using cryptography. A hash function described as "double SHA-256" is used. However how tough is it to mine Bitcoins? This can be another inquiry. This depends a lot on the effort and computing power being used into mining. Another element worth pointing out is the software application procedure. For each 2016 blocks, problem involved in mining of Bitcoins is changed by itself just to keep the procedure. In turn, the rate of block generation is kept constant. A Bitcoin problem chart is an ideal procedure to show the mining trouble in time. The trouble level changes itself to increase or down in a straight proportional way, depending upon the computational power, whether it's being sustained or removed. As the variety of miners increase, portion of revenues been worthy of by the individuals decrease, everybody winds up with smaller sized pieces of the revenues.
Having private economies and neighborhoods, cryptocurrencies like Dogecoin, Namecoin or Peercoin, are called Altcoins. You can easily track your different cryptocurrency by using reputable portfolio trackers.These are options to Bitcoin. Practically like Bitcoins, these 'cousins' do have a substantial fan-following and enthusiasts who are eager to take a deep plunge into the big ocean and start to mine it. Algorithms used for Altcoin mining are either SHA-256 or Scrypt. Numerous other ingenious algorithms exist too. Alleviate, price and simpleness can render it possible to mine Altcoins on a PC or by using unique mining software application. Altcoins are a bit 'down to earth' compared to Bitcoins, yet changing them into huge dollars is a little challenging. Cryptocurrency enthusiasts can simply hope, if a few of them might witness the comparable huge popularity!
submitted by Katherine4512 to BitcoinBasic [link] [comments]

An extensive list of blockchain courses, resources and articles to help you get a job working with blockchain.

u/Maximus_no and me spent some time at work collecting and analyzing learning material for blockchain development. The list contains resources for developers, as well as business analysts/consultants looking to learn more about blockchain use-cases and solutions.

Certifications and Courses

IIB Council
Link to course: IIB council : Certified Blockchain Professional
C|BP is an In-Depth, Industry Agnostic, Hands-On Training and Certification Course specifically tailored for Industry Professionals and Developers interested in implementing emerging technologies in the Data-Driven Markets and Digitized Economies.
The IIB Council Certified Blockchain Professional (C|BP) Course was developed to help respective aspiring professionals gain excessive knowledge in Blockchain technology and its implication on businesses.
WHO IS IT FOR:

Professionals

C|BP is developed in line with the latest industry trends to help current and aspiring Professionals evolve in their career by implementing the latest knowledge in blockchain technology. This course will help professionals understand the foundation of Blockchain technology and the opportunities this emerging technology is offering.

Developers

If you are a Developer and you are willing to learn blockchain technology this course is for you. You will learn to build and model Blockchain solutions and Blockchain-based applications for enterprises and businesses in multiple Blockchain Technologies.

Certified Blockchain Business Foundations (CBBF)

This exam is designed for non-technical business professionals who require basic knowledge about Blockchain and how it will be executed within an organization. This exam is NOT appropriate for technology professionals seeking to gain deeper understanding of Blockchain technology implementation or programming.

A person who holds this certification demonstrates their knowledge of:

· What is Blockchain? (What exactly is it?)
· Non-Technical Technology Overview (How does it work?)
· Benefits of Blockchain (Why should anyone consider this?)
· Use Cases (Where and for what apps is it appropriate?)
· Adoption (Who is using it and for what?)
· Future of Blockchain (What is the future?)

Certified Blockchain Solution Architect (CBSA)

A person who holds this certification demonstrates their ability to:

· Architect blockchain solutions
· Work effectively with blockchain engineers and technical leaders
· Choose appropriate blockchain systems for various use cases
· Work effectively with both public and permissioned blockchain systems

This exam will prove that a student completely understands:

· The difference between proof of work, proof of stake, and other proof systems and why they exist
· Why cryptocurrency is needed on certain types of blockchains
· The difference between public, private, and permissioned blockchains
· How blocks are written to the blockchain
· Where cryptography fits into blockchain and the most commonly used systems
· Common use cases for public blockchains
· Common use cases for private & permissioned blockchains
· What is needed to launch your own blockchain
· Common problems & considerations in working with public blockchains
· Awareness of the tech behind common blockchains
· When is mining needed and when it is not
· Byzantine Fault Tolerance
· Consensus among blockchains
· What is hashing
· How addresses, public keys, and private keys work
· What is a smart contract
· Security in blockchain
· Brief history of blockchain
· The programming languages of the most common blockchains
· Common testing and deployment practices for blockchains and blockchain-based apps

Certified Blockchain Developer - Ethereum (CBDE)

A person who holds this certification demonstrates their ability to:

· Plan and prepare production ready applications for the Ethereum blockchain
· Write, test, and deploy secure Solidity smart contracts
· Understand and work with Ethereum fees
· Work within the bounds and limitations of the Ethereum blockchain
· Use the essential tooling and systems needed to work with the Ethereum ecosystem

This exam will prove that a student completely understands how to:

· Implement web3.js
· Write and compile Solidity smart contracts
· Create secure smart contracts
· Deploy smart contracts both the live and test Ethereum networks
· Calculate Ethereum gas costs
· Unit test smart contracts
· Run an Ethereum node on development machines

Princeton: Sixty free lectures from Princeton on bitcoin and cryptocurrencies. Avg length ~15 mins

Basic course with focus on Bitcoin. After this course, you’ll know everything you need to be able to separate fact from fiction when reading claims about Bitcoin and other cryptocurrencies. You’ll have the conceptual foundations you need to engineer secure software that interacts with the Bitcoin network. And you’ll be able to integrate ideas from Bitcoin in your own projects.

MIT : BLOCKCHAIN TECHNOLOGIES: BUSINESS INNOVATION AND APPLICATION

· A mid / basic understanding of blockchain technology and its long-term implications for business, coupled with knowledge of its relationship to other emerging technologies such as AI and IoT
· An economic framework for identifying blockchain-based solutions to challenges within your own context, guided by the knowledge of cryptoeconomics expert Christian Catalini
· Recognition of your newfound blockchain knowledge in the form of a certificate of completion from the MIT Sloan School of Management — one of the world’s leading business schools
Orientation Module: Welcome to Your Online Campus
Module 1: An introduction to blockchain technology
Module 2: Bitcoin and the curse of the double-spending problem
Module 3: Costless verification: Blockchain technology and the last mile problem
Module 4: Bootstrapping network effects through blockchain technology and cryptoeconomics
Module 5: Using tokens to design new types of digital platforms
Module 6: The future of blockchain technology, AI, and digital privacy

Oxford Blockchain Strategy Programme

· A mid / basic understanding of what blockchain is and how it works, as well as insights into how it will affect the future of industry and of your organization.
· The ability to make better strategic business decisions by utilizing the Oxford Blockchain Strategic framework, the Oxford Blockchain Regulation framework, the Oxford Blockchain Ecosystem map, and drawing on your knowledge of blockchain and affiliated industries and technologies.
· A certificate of attendance from Oxford Saïd as validation of your newfound blockchain knowledge and skills, as well as access to a global network of like-minded business leaders and innovators.
Module 1: Understanding blockchain
Module 2: The blockchain ecosystem
Module 3: Innovations in value transfer
Module 4: Decentralized apps and smart contracts
Module 5: Transforming enterprise business models
Module 6: Blockchain frontiers

Resources and Articles

Introduction to Distributed Ledger Technologies (DLT) https://www.ibm.com/developerworks/cloud/library/cl-blockchain-basics-intro-bluemix-trs/
Tomas’s Personal Favourite: 150+ Resources for going from web-dev to blockchain engineer https://github.com/benstew/blockchain-for-software-engineers
Hyperledger Frameworks Hyperledger is widely regarded as the most mature open-source framework for building private & permissioned blockchains.
Tutorials: https://www.hyperledger.org/resources/training
R3 Corda Open-source developer frameworks for building private, permissioned blockchains. A little better than Hyperledger on features like privacy and secure channels. Used mostly in financial applications.
Ethereum, Solidity, dApps and Smart-Contracts
Ethereum & Solidity Course (favourite): https://www.udemy.com/ethereum-and-solidity-the-complete-developers-guide/
An Introduction to Ethereum’s Token Standards: https://medium.com/coinmonks/anatomy-of-an-erc-an-exhaustive-survey-8bc1a323b541
How To Create Your First ERC20 Token: https://medium.com/bitfwd/how-to-do-an-ico-on-ethereum-in-less-than-20-minutes-a0062219374
Ethereum Developer Tools [Comprehensive List]: https://github.com/ConsenSys/ethereum-developer-tools-list/blob/masteREADME.md
CryptoZombies – Learn to code dApps through game-development: https://cryptozombies.io/
Intro to Ethereum Development: https://hackernoon.com/ethereum-development-walkthrough-part-1-smart-contracts-b3979e6e573e
Notes from Consensys Academy Participant (free): https://github.com/ScottWorks/ConsenSys-Academy-Notes
AWS Ethereum Templates: https://aws.amazon.com/blogs/aws/get-started-with-blockchain-using-the-new-aws-blockchain-templates/
Create dApps with better user-experience: https://blog.hellobloom.io/how-to-make-a-user-friendly-ethereum-dapp-5a7e5ea6df22
Solidity YouTube Course: https://www.youtube.com/channel/UCaWes1eWQ9TbzA695gl_PtA
[UX &UI] Designing a decentralized profile dApp: https://uxdesign.cc/designing-a-decentralized-profile-dapp-ab12ead4ab56
Scaling Solutions on Ethereum: https://media.consensys.net/the-state-of-scaling-ethereum-b4d095dbafae
Different Platforms for dApps and Smart-Contracts
While Ethereum is the most mature dApp framework with both the best developer tools, resources and community, there are other public blockchain platforms. Third generation blockchains are trying to solve Ethereum’s scaling and performance issues. Here is an overview of dApp platforms that can be worth looking into:
NEO - https://neo.org/ The second most mature dApp platform. NEO has better scalability and performance than Ethereum and has 1’000 TPS to ETH’s 15 by utilizing a dBFT consensus algorithm. While better infrastructure, NEO does not have the maturity of Ethereum’s developer tools, documentation and community.
A writeup on why a company chose to develop on NEO and not Ethereum: https://medium.com/orbismesh/why-we-chose-neo-over-ethereum-37fc9208ffa0
Cardano - https://www.cardano.org/en/home/ While still in alpha with a long and ambitious roadmap ahead of it, Cardano is one of the most anticipated dApp platforms out there. IOHK, the research and engineering company that maintains Cardano, has listed a lot of great resources and scientific papers that is worth looking into.
An Intro to Cardano: https://hackernoon.com/cardano-ethereum-and-neo-killer-or-overhyped-and-overpriced-8fcd5f8abcdf
IOHK Scientific Papers - https://iohk.io/research/papers/
Stellar - https://www.stellar.org/ If moving value fast from one party to another by using smart-contracts is the goal, Stellar Lumens is your platform. Initially as an open-source fork from Ripple, Stellar has become one of the mature frameworks for financial applications. Stellar’s focus lies in interoperability with legacy financial systems and cheap/fast value transfer. It’s smart-contract capability is rather limited in comparison to Ethereum and HyperLedger, so take that in consideration.
Ripplewww.ripple.com Ripple and its close cousin, Stellar, is two of the most well-known cryptocurrencies and DLT frameworks meant for the financial sector. Ripple enables instant settlement between banks for international transactions.

Consensus Algorithms

[Proof of Work] - very short, cuz it's well-known.
[1] Bitcoin - to generate a new block miner must generate hash of the new block header that is in line with given requirements.
Others: Ethereum, Litecoin etc.
[Hybrid of PoW and PoS]
[2] Decred - hybrid of “proof of work” and “proof of stake”. Blocks are created about every 5 minutes. Nodes in the network looking for a solution with a known difficulty to create a block (PoW). Once the solution is found it is broadcast to the network. The network then verifies the solution. Stakeholders who have locked some DCR in return for a ticket* now have the chance to vote on the block (PoS). 5 tickets are chosen pseudo-randomly from the ticket pool and if at least 3 of 5 vote ‘yes’ the block is permanently added to the blockchain. Both miners and voters are compensated with DCR : PoS - 30% and PoW - 60% of about 30 new Decred issued with a block. * 1 ticket = ability to cast 1 vote. Stakeholders must wait an average of 28 days (8,192 blocks) to vote their tickets.
[Proof of Stake]
[3] Nxt - The more tokens are held by account, the greater chance that account will earn the right to generate a block. The total reward received as a result of block generation is the sum of the transaction fees located within the block. Three values are key to determining which account is eligible to generate a block, which account earns the right to generate a block, and which block is taken to be the authoritative one in times of conflict: base target value, target value and cumulative difficulty. Each block on the chain has a generation signature parameter. To participate in the block's forging process, an active account digitally signs the generation signature of the previous block with its own public key. This creates a 64-byte signature, which is then hashed using SHA256. The first 8 bytes of the resulting hash are converted to a number, referred to as the account hit. The hit is compared to the current target value(active balance). If the computed hit is lower than the target, then the next block can be generated.
[4] Peercoin (chain-based proof of stake) - coin age parameter. Hybrid PoW and PoS algorithm. The longer your Peercoins have been stationary in your account (to a maximum of 90 days), the more power (coin age) they have to mint a block. The act of minting a block requires the consumption of coin age value, and the network determines consensus by selecting the chain with the largest total consumed coin age. Reward - minting + 1% yearly.
[5] Reddcoin (Proof of stake Velocity) - quite similar to Peercoin, difference: not linear coin-aging function (new coins gain weight quickly, and old coins gain weight increasingly slowly) to encourage Nodes Activity. Node with most coin age weight have a bigger chance to create block. To create block Node should calculate right hash. Block reward - interest on the weighted age of coins/ 5% annual interest in PoSV phase.
[6] Ethereum (Casper) - uses modified BFT consensus. Blocks will be created using PoW. In the Casper Phase 1 implementation for Ethereum, the “proposal mechanism" is the existing proof of work chain, modified to have a greatly reduced block reward. Blocks will be validated by set of Validators. Block is finalised when 2/3 of validators voted for it (not the number of validators is counted, but their deposit size). Block creator rewarded with Block Reward + Transaction FEES.
[7] Lisk (Delegated Proof-of-stake) - Lisk stakeholders vote with vote transaction (the weight of the vote depends on the amount of Lisk the stakeholder possess) and choose 101 Delegates, who create all blocks in the blockchain. One delegate creates 1 block within 1 round (1 round contains 101 blocks) -> At the beginning of each round, each delegate is assigned a slot indicating their position in the block generation process -> Delegate includes up to 25 transactions into the block, signs it and broadcasts it to the network -> As >51% of available peers agreed that this block is acceptable to be created (Broadhash consensus), a new block is added to the blockchain. *Any account may become a delegate, but only accounts with the required stake (no info how much) are allowed to generate blocks. Block reward - minted Lisks and transaction fees (fees for all 101 blocks are collected firstly and then are divided between delegates). Blocks appears every 10 sec.
[8] Cardano (Ouroboros Proof of Stake) - Blocks(slots) are created by Slot Leaders. Slot Leaders for N Epoch are chosen during n-1 Epoch. Slot Leaders are elected from the group of ADA stakeholders who have enough stake. Election process consist of 3 phases: Commitment phase: each elector generates a random value (secret), signs it and commit as message to network (other electors) saved in to block. -> Reveal phase: Each elector sends special value to open a commitment, all this values (opening) are put into the block. -> Recovery phase: each elector verifies that commitments and openings match and extracts the secrets and forms a SEED (randomly generated bytes string based on secrets). All electors get the same SEED. -> Follow the Satoshi algorithm : Elector who have coin which corresponded to SEED become a SLOT LEADER and get a right to create a block. Slot Leader is rewarded with minted ADA and transactions Fee.
[9] Tezos (Proof Of Stake) - generic and self-amending crypto-ledger. At the beginning of each cycle (2048 blocks), a random seed is derived from numbers that block miners chose and committed to in the penultimate cycle, and revealed in the last. -> Using this random seed, a follow the coin strategy (similar to Follow The Satoshi) is used to allocate mining rights and signing rights to stakeholders for the next cycle*. -> Blocks are mined by a random stakeholder (the miner) and includes multiple signatures of the previous block provided by random stakeholders (the signers). Mining and signing both offer a small reward but also require making a one cycle safety deposit to be forfeited in the event of a double mining or double signing.
· the more coins (rolls) you have - the more your chance to be a minesigner.
[10] Tendermint (Byzantine Fault Tolerance) - A proposal is signed and published by the designated proposer at each round. The proposer is chosen by a deterministic and non-choking round robin selection algorithm that selects proposers in proportion to their voting power. The proposer create the block, that should be validated by >2/3 of Validators, as follow: Propose -> Prevote -> Precommit -> Commit. Proposer rewarded with Transaction FEES.
[11] Tron (Byzantine Fault Tolerance) - This blockhain is still on development stage. Consensus algorithm = PoS + BFT (similar to Tendermint): PoS algorithm chooses a node as Proposer, this node has the power to generate a block. -> Proposer broadcasts a block that it want to release. -> Block enters the Prevote stage. It takes >2/3 of nodes' confirmations to enter the next stage. -> As the block is prevoted, it enters Precommit stage and needs >2/3 of node's confirmation to go further. -> As >2/3 of nodes have precommited the block it's commited to the blockchain with height +1. New blocks appears every 15 sec.
[12] NEO (Delegated Byzantine Fault Tolerance) - Consensus nodes* are elected by NEO holders -> The Speaker is identified (based on algorithm) -> He broadcasts proposal to create block -> Each Delegate (other consensus nodes) validates proposal -> Each Delegate sends response to other Delegates -> Delegate reaches consensus after receiving 2/3 positive responses -> Each Delegate signs the block and publishes it-> Each Delegate receives a full block. Block reward 6 GAS distributed proportionally in accordance with the NEO holding ratio among NEO holders. Speaker rewarded with transaction fees (mostly 0). * Stake 1000 GAS to nominate yourself for Bookkeeping(Consensus Node)
[13] EOS (Delegated Proof of Stake) - those who hold tokens on a blockchain adopting the EOS.IO software may select* block producers through a continuous approval voting system and anyone may choose to participate in block production and will be given an opportunity to produce blocks proportional to the total votes they have received relative to all other producers. At the start of each round 21 unique block producers are chosen. The top 20 by total approval are automatically chosen every round and the last producer is chosen proportional to their number of votes relative to other producers. Block should be confirmed by 2/3 or more of elected Block producers. Block Producer rewarded with Block rewards. *the more EOS tokens a stakeholder owns, the greater their voting power
[The XRP Ledger Consensus Process]
[14] Ripple - Each node receives transaction from external applications -> Each Node forms public list of all valid (not included into last ledger (=block)) transactions aka (Candidate Set) -> Nodes merge its candidate set with UNLs(Unique Node List) candidate sets and vote on the veracity of all transactions (1st round of consensus) -> all transactions that received at least 50% votes are passed on the next round (many rounds may take place) -> final round of consensus requires that min 80% of Nodes UNL agreeing on transactions. It means that at least 80% of Validating nodes should have same Candidate SET of transactions -> after that each Validating node computes a new ledger (=block) with all transactions (with 80% UNL agreement) and calculate ledger hash, signs and broadcasts -> All Validating nodes compare their ledgers hash -> Nodes of the network recognize a ledger instance as validated when a 80% of the peers have signed and broadcast the same validation hash. -> Process repeats. Ledger creation process lasts 5 sec(?). Each transaction includes transaction fee (min 0,00001 XRP) which is destroyed. No block rewards.
[The Stellar consensus protocol]
[15] Stellar (Federated Byzantine Agreement) - quite similar to Ripple. Key difference - quorum slice.
[Proof of Burn]
[16] Slimcoin - to get the right to write blocks Node should “burn” amount of coins. The more coins Node “burns” more chances it has to create blocks (for long period) -> Nodes address gets a score called Effective Burnt Coins that determines chance to find blocks. Block creator rewarded with block rewards.
[Proof of Importance]
[17] NEM - Only accounts that have min 10k vested coins are eligible to harvest (create a block). Accounts with higher importance scores have higher probabilities of harvesting a block. The higher amount of vested coins, the higher the account’s Importance score. And the higher amount of transactions that satisfy following conditions: - transactions sum min 1k coins, - transactions made within last 30 days, - recipient have 10k vested coins too, - the higher account’s Important score. Harvester is rewarded with fees for the transactions in the block. A new block is created approx. every 65 sec.
[Proof of Devotion]
[18] Nebulas (Proof of Devotion + BFT) - quite similar to POI, the PoD selects the accounts with high influence. All accounts are ranked according to their liquidity and propagation (Nebulas Rank) -> Top-ranked accounts are selected -> Chosen accounts pay deposit and are qualified as the blocks Validators* -> Algorithm pseudo-randomly chooses block Proposer -> After a new block is proposed, Validators Set (each Validator is charged a deposit) participate in a round of BFT-Style voting to verify block (1. Prepare stage -> 2. Commit Stage. Validators should have > 2/3 of total deposits to validate Block) -> Block is added. Block rewards : each Validator rewarded with 1 NAS. *Validators Set is dynamic, changes in Set may occur after Epoch change.
[IOTA Algorithm]
[19] IOTA - uses DAG (Directed Acyclic Graph) instead of blockchain (TANGLE equal to Ledger). Graph consist of transactions (not blocks). To issue a new transaction Node must approve 2 random other Transactions (not confirmed). Each transaction should be validate n(?) times. By validating PAST(2) transactions whole Network achieves Consensus. in Order to issue transaction Node: 1. Sign transaction with private key 2. choose two other Transactions to validate based on MCMC(Markov chain Monte Carlo) algorithm, check if 2 transactions are valid (node will never approve conflicting transactions) 3. make some PoW(similar to HashCash). -> New Transaction broadcasted to Network. Node don’t receive reward or fee.
[PBFT + PoW]
[20] Yobicash - uses PBFT and also PoW. Nodes reach consensus on transactions by querying other nodes. A node asks its peers about the state of a transaction: if it is known or not, and if it is a doublespending transaction or not. As follow : Node receives new transaction -> Checks if valid -> queries all known nodes for missing transactions (check if already in DAG ) -> queries 2/3 nodes for doublepsending and possibility -> if everything is ok add to DAG. Reward - nodes receive transaction fees + minting coins.
[Proof of Space/Proof of Capacity]
[21] Filecoin (Power Fault Tolerance) - the probability that the network elects a miner(Leader) to create a new block (it is referred to as the voting power of the miner) is proportional to storage currently in use in relation to the rest of the network. Each node has Power - storage in use verified with Proof of Spacetime by nodes. Leaders extend the chain by creating a block and propagating it to the network. There can be an empty block (when no leader). A block is committed if the majority of the participants add their weight on the chain where the block belongs to, by extending the chain or by signing blocks. Block creator rewarded with Block reward + transaction fees.
[Proof of Elapsed Time (POET)]
[22] Hyperledger Sawtooth - Goal - to solve BFT Validating Nodes limitation. Works only with intel’s SGX. PoET uses a random leader election model or a lottery based election model based on SGX, where the protocol randomly selects the next leader to finalize the block. Every validator requests a wait time from an enclave (a trusted function). -> The validator with the shortest wait time for a particular transaction block is elected the leader. -> The BlockPublisher is responsible for creating candidate blocks to extend the current chain. He takes direction from the consensus algorithm for when to create a block and when to publish a block. He creates, Finalizes, Signs Block and broadcast it -> Block Validators check block -> Block is created on top of blockchain.
[23] Byteball (Delegated Byzantine Fault Tolerance) - only verified nodes are allowed to be Validation nodes (list of requirements https://github.com/byteball/byteball-witness). Users choose in transaction set of 12 Validating nodes. Validating nodes(Witnesses) receive transaction fees.
[24] Nano - uses DAG, PoW (HashCash). Nano uses a block-lattice structure. Each account has its own blockchain (account-chain) equivalent to the account’s transaction/balance history. To add transaction user should make some HashCash PoW -> When user creates transaction Send Block appears on his blockchain and Receive block appears on Recipients blockchain. -> Peers in View receive Block -> Peers verify block (Double spending and check if already in the ledger) -> Peers achieve consensus and add block. In case of Fork (when 2 or more signed blocks reference the same previous block): Nano network resolves forks via a balance-weighted voting system where representative nodes vote for the block they observe, as >50% of weighted votes received, consensus achieved and block is retained in the Node’s ledger (block that lose the vote is discarded).
[25] Holochain - uses distributed hash table (DHT). Instead of trying to manage global consensus for every change to a huge blockchain ledger, every participant has their own signed hash chain. In case of multi-party transaction, it is signed to each party's chain. Each party signs the exact same transaction with links to each of their previous chain entries. After data is signed to local chains, it is shared to a DHT where every neighbor node validate it. Any consensus algorithms can be built on top of Holochain.
[26] Komodo ('Delegated' Delayed Proof of Work (dPoW)) - end-to-end blockchain solutions. DPoW consensus mechanism does not recognize The Longest Chain Rule to resolve a conflict in the network, instead the dPoW looks to backups it inserted previously into the chosen PoW blockchain. The process of inserting backups of Komodo transactions into a secure PoW is “notarization.” Notarisation is performed by the elected Notary nodes. Roughly every ten minutes, the Notary nodes perform a special block hash mined on the Komodo blockchain and take note of the overall Komodo blockchain “height”. The notary nodes process this specifc block so that their signatures are cryptographically included within the content of the notarized data. There are sixty-four “Notary nodes” elected by a stake-weighted vote, where ownership of KMD represents stake in the election. They are a special type of blockchain miner, having certain features in their underlying code that enable them to maintain an effective and cost-efcient blockchain and they periodically receives the privilege to mine a block on “easy difculty.”
Source: https://www.reddit.com/CryptoTechnology/comments/7znnq8/my_brief_observation_of_most_common_consensus/
Whitepapers Worth Looking Into:
IOTA -http://iotatoken.com/IOTA_Whitepaper.pdf
NANO -https://nano.org/en/whitepaper
Bitcoin -https://bitcoin.org/bitcoin.pdf
Ethereum: https://github.com/ethereum/wiki/wiki/White-Paper
Ethereum Plasma (Omise-GO) -https://plasma.io/plasma.pdf
Cardano - https://eprint.iacr.org/2016/889.pdf
submitted by heart_mind_body to CryptoCurrency [link] [comments]

Peercoin vs Bitcoin Bitcoin Miner - YouTube Peercoin setup guide - Episode 4 Mining Cubieboard 1, 2 - Mining Peercoins (SHA-256 based) Cryptocurrency Peercoin vs Bitcoin

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Peercoin vs Bitcoin

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