Bitcoin: Proof of work (video) | Bitcoin | Khan Academy

XMG - Coin of the Magi

Coin of the Magi is a peer-to-peer global currency that enables instant payments to anyone in the world. XMG utilizes proof-of-work and proof-of-stake systems and is CPU and eco focussed - rewards reduce as hash increases.
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An alternative crypto currency for the cannabis industry.

Cannacoin is an internet based digital currency for the cannabis industry: a distributed, worldwide, decentralized digital money. Unlike traditional currencies such as dollars, Cannacoins are issued and managed without any central authority whatsoever: there is no government, company, or bank in charge of Cannacoin. As such, it is more resistant to wild inflation and corrupt practices. With Cannacoin, you are your own bank.
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Cryptocurrency news and discussions.

Cryptocurrency news and discussion. Bitcoin, Litecoin, Ethereum, Ripple, Monero, Dash, NEO, IOTA Lightning Network, SegWit, Augur, Steemit, privacy, ICO, block time, Proof of Work, Proof of Stake, NEM, Peercoin, Vertcoin, Iconomi, Dogecoin, Zcash, BitShares, Walton, mining, hashrate, mining difficulty, blockchain, coinbase, merkle, transaction rate, decentralized exchange, annual inflation rate, total market cap, bitcoin cash, BTC
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@BinanceResearch: RT @BinanceResearch: Bitcoin Cash (BCH) saw its block mining rewards being halved to 6.25 #BCH per block. #halving Learn about #BitcoinCash, a peer-to-peer cryptocurrency based on a Proof-of-Work (PoW) algorithm and the differences between $BCH and $BTC. 🔽 https://t.co/iHN6d6GlBk

@BinanceResearch: RT @BinanceResearch: Bitcoin Cash (BCH) saw its block mining rewards being halved to 6.25 #BCH per block. #halving Learn about #BitcoinCash, a peer-to-peer cryptocurrency based on a Proof-of-Work (PoW) algorithm and the differences between $BCH and $BTC. 🔽 https://t.co/iHN6d6GlBk submitted by rulesforrebels to BinanceTrading [link] [comments]

@BinanceResearch: Bitcoin Cash (BCH) saw its block mining rewards being halved to 6.25 #BCH per block. #halving Learn about #BitcoinCash, a peer-to-peer cryptocurrency based on a Proof-of-Work (PoW) algorithm and the differences between $BCH and $BTC. 🔽 https://t.co/iHN6d6GlBk

@BinanceResearch: Bitcoin Cash (BCH) saw its block mining rewards being halved to 6.25 #BCH per block. #halving Learn about #BitcoinCash, a peer-to-peer cryptocurrency based on a Proof-of-Work (PoW) algorithm and the differences between $BCH and $BTC. 🔽 https://t.co/iHN6d6GlBk submitted by rulesforrebels to BinanceTrading [link] [comments]

@binance: RT @BinanceResearch: Bitcoin Cash (BCH) saw its block mining rewards being halved to 6.25 #BCH per block. #halving Learn about #BitcoinCash, a peer-to-peer cryptocurrency based on a Proof-of-Work (PoW) algorithm and the differences between $BCH and $BTC. 🔽 https://t.co/iHN6d6GlBk

@binance: RT @BinanceResearch: Bitcoin Cash (BCH) saw its block mining rewards being halved to 6.25 #BCH per block. #halving Learn about #BitcoinCash, a peer-to-peer cryptocurrency based on a Proof-of-Work (PoW) algorithm and the differences between $BCH and $BTC. 🔽 https://t.co/iHN6d6GlBk submitted by rulesforrebels to BinanceTrading [link] [comments]

#bitcoin under attack: twice someone tries to broadcast a bad block (proof of work failed: blocks start with only one zero .. 15 min later with not enough zero's). Glad my node rejects this joker immediately!

#bitcoin under attack: twice someone tries to broadcast a bad block (proof of work failed: blocks start with only one zero .. 15 min later with not enough zero's). Glad my node rejects this joker immediately! submitted by Bitcoin_to_da_Moon to Bitcoin [link] [comments]

Erik Voorhees: “Roger - please stop referencing me to back up your opinion that Bitcoin Cash is Bitcoin. It isn't. Bitcoin is the chain originating from the genesis block with the highest accumulated proof of work. The Bitcoin Cash fork failed to gain majority, thus it is not Bitcoin.”

Erik Voorhees: “Roger - please stop referencing me to back up your opinion that Bitcoin Cash is Bitcoin. It isn't. Bitcoin is the chain originating from the genesis block with the highest accumulated proof of work. The Bitcoin Cash fork failed to gain majority, thus it is not Bitcoin.” submitted by eragmus to Bitcoin [link] [comments]

Erik Voorhees: “Roger - please stop referencing me to back up your opinion that Bitcoin Cash is Bitcoin. It isn't. Bitcoin is the chain originating from the genesis block with the highest accumulated proof of work. The Bitcoin Cash fork failed to gain majority, thus it is not Bitcoin.”

Erik Voorhees: “Roger - please stop referencing me to back up your opinion that Bitcoin Cash is Bitcoin. It isn't. Bitcoin is the chain originating from the genesis block with the highest accumulated proof of work. The Bitcoin Cash fork failed to gain majority, thus it is not Bitcoin.” submitted by eragmus to CryptoCurrency [link] [comments]

Erik Voorhees: “Roger - please stop referencing me to back up your opinion that Bitcoin Cash is Bitcoin. It isn't. Bitcoin is the chain originating from the genesis block with the highest accumulated proof of work. The Bitcoin Cash fork failed to gain majority, thus it is not Bitcoin.”

Erik Voorhees: “Roger - please stop referencing me to back up your opinion that Bitcoin Cash is Bitcoin. It isn't. Bitcoin is the chain originating from the genesis block with the highest accumulated proof of work. The Bitcoin Cash fork failed to gain majority, thus it is not Bitcoin.” submitted by sumsaph to btc [link] [comments]

Bitcoin declining block rewards are pyramidal’ish - Why no-premine pure Proof of Work with constant block reward is the only viable distribution model for a cryptocurrency in the long term.

Bitcoin declining block rewards are pyramidal’ish - Why no-premine pure Proof of Work with constant block reward is the only viable distribution model for a cryptocurrency in the long term. submitted by el_hispano to CryptoCurrency [link] [comments]

Question about Bitcoin protocol (Proof of Work, Block Reward & Transaction Limit).

I have just watched 3Blue1Brown's video on Cryptocurrency - He is very good at making complex ideas simple, btw!
I was wondering though. In the video, Grant said that the 'Zero's' on the Proof of work changes periodically, as the currency is decentralized, who decides when and how that changes?
Grant also mentioned that there is a transaction limit of 2400 transactions. Who set this limit, can it be changed (if so, who by?)
On the same note - the reward reduces every 210,000 blocks -- who make the reduction, or is it automatic?
Thanks a lot
submitted by TheAlmightyDada to CryptoCurrency [link] [comments]

Happy 10th Birthday Bitcoin ! first ever 103 MB block ever mined on a public Proof-of-Work Bitcoin Blockchain

Happy 10th Birthday Bitcoin ! first ever 103 MB block ever mined on a public Proof-of-Work Bitcoin Blockchain submitted by zhell_ to btc [link] [comments]

Happy 10th Birthday Bitcoin ! first ever 103 MB block ever mined on a public Proof-of-Work Bitcoin Blockchain

Happy 10th Birthday Bitcoin ! first ever 103 MB block ever mined on a public Proof-of-Work Bitcoin Blockchain submitted by zhell_ to bitcoincashSV [link] [comments]

Being the chain originating from the genesis block with the highest accumulated proof of work is only one of the metrics that makes Bitcoin Bitcoin. Edit and decide for yourself which has more Bitcoin-ness:

Being the chain originating from the genesis block with the highest accumulated proof of work is only one of the metrics that makes Bitcoin Bitcoin. Edit and decide for yourself which has more Bitcoin-ness: submitted by MemoryDealers to btc [link] [comments]

"Although Bitcoin was intended to be a decentralized digital currency, in practice, mining power is quite concentrated ... [O]ur work further motivates the study of protocols that minimize 'orphaned' blocks, proof-of-stake protocols, and incentive compatible protocols." [abstract + link to PDF]

submitted by flexibeast to compsci [link] [comments]

Prove me wrong: BCH is already "Bitcoin". It has the most cumulative proof-of-work among VALID SHA256 block chains

BTC may currently have most cumulative proof-of-work, but this is irrelevant because BTC has been invalid per the white paper (i.e. did not follow Nakamoto Consensus) ever since block 494,782. This is a factual determination of "validity" that can never be rectified by BTC unless someone rolls it back and restarts the chain at 494,783 with "2x" included. Therefore, BTC is not Bitcoin now, nor can it ever be going forward.
BCH is already Bitcoin, because it is the valid SHA256 block chain that has most cumulative proof-of-work.
With almost a $9k valuation, BTC continues to be something, but it's definitely no longer "Bitcoin".
submitted by AcerbLogic to btc [link] [comments]

Happy 10th Birthday Bitcoin ! first ever 103 MB block ever mined on a public Proof-of-Work Bitcoin Blockchain

Happy 10th Birthday Bitcoin ! first ever 103 MB block ever mined on a public Proof-of-Work Bitcoin Blockchain submitted by zhell_ to bitcoinsv [link] [comments]

Roger Ver:"Being the chain originating from the genesis block with the highest accumulated proof of work is only one of the metrics that makes Bitcoin Bitcoin."

Roger Ver: submitted by money78 to btc [link] [comments]

Bitcoin cash ABC vs SV proof of work comparison past 7 days (block 556304-557275)

ABC: 1,883,033.099104452 exahashes (filtered by AntPool, Bitcoin.com, BTC.com, BTC.Top, ViaBTC)
SV : 2,188,777.138620990 exahashes (filtered by BMG, CoinGeek, Mempool, okminer, SVPool)

SV has done 16.24% more proof of work this week. Any predictions for the next week?
submitted by PunchPlump to btc [link] [comments]

The EDA on Bitcoin Cash does not break the definition of BTC in Satoshi's whitepaper: "the proof-of-work difficulty is determined by a moving average targeting an average number of blocks per hour. If they're generated too fast, the difficulty increases."

submitted by cryptorebel to btc [link] [comments]

'Proof-of-work is essentially one-CPU-one-vote. With 45% Hash Concentration, it takes 340 blocks (56 hours), to obtain 99.9% accuracy' - Bitcoin White Paper on the Danger of Concentrated Hash

submitted by kybarnet to Bitcoin [link] [comments]

Bitcoin beyond 2020: Can proof-of-work sustain life after block rewards?

Bitcoin beyond 2020: Can proof-of-work sustain life after block rewards? submitted by ulros to fbitcoin [link] [comments]

Bitcoin is the chain starting with the Nakamoto genesis block and having the most cumulative proof of work. Like it or not, that chain is Bitcoin Legacy/Segwit/Core.

You can chant "Bitcoin Cash is Bitcoin" all you want, but by definition you are wrong.
The majority decision is represented by the longest chain, which has the greatest proof-of-work effort invested in it. — Satoshi Nakamoto
submitted by toptenten to btc [link] [comments]

Happy 10th Birthday Bitcoin ! first ever 103 MB block ever mined on a public Proof-of-Work Bitcoin Blockchain

Happy 10th Birthday Bitcoin ! first ever 103 MB block ever mined on a public Proof-of-Work Bitcoin Blockchain submitted by ABitcoinAllBot to BitcoinAll [link] [comments]

Bitcoin Protocol Tutorial: Proof of Work Bitcoin Q&A: Proof-of-work, attacks, and ASICs BITCOIN MINING ,METHOD OF MINING ,TECHNIQUES , EARN FREE ... Proof of Work in Blockchain Blockchain - Proof of work

So for example, if you've heard of the Bitcoin, the Bitcoin electronic payment system, that system actually leverages a proof of work scheme within the context of creating what are known as transaction block chains. Now aside from Bitcoin, which is a very recent user of these types of proof of work schemes, these schemes have been proposed in An idea that begat Bitcoin. Proof of work was the first and still the most common consensus mechanism used in cryptocurrencies. It is the DNA of bitcoin as well as the earliest blockchain, and it is represented by a 32-bit data that is used to validate the information stored within a block. The Search. Perhaps the least intuitive aspect of the Bitcoin network is the proof-of-work concept it uses to define the requirement for the generation of a new set of transactions ("block") to be added to the distributed transaction database ("block chain"). This concept, which grew out of ideas from the early cypherpunk movement 1, is new to monetary theory and feels a little out of place in Proof-of-Work (PoW) was the first successful decentralized blockchain consensus algorithm. PoW is used in Bitcoin , Ethereum (Ethereum plans to switch to Proof-of-Stake), Litecoin , ZCash , Monero , and many other blockchains. Block leaders, which produce the next block, are selected in a lottery-like format that corresponds directly to their contributed computing (i.e., hash) power to the process. As Satoshi Nakamoto explained in the Bitcoin whitepaper: “The proof-of-work also solves the problem of determining representation in majority decision making.

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Bitcoin Protocol Tutorial: Proof of Work

In this Bitcoin protocol tutorial video, the notion of Proof of Work is discussed. The idea of proof of work, normally, is to protect against spam and DoS attacks. Blockchain - Proof of work Watch more videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Parth Joshi, Tutorials Point India Pr... Individual blocks must contain a proof of work to be considered valid. This proof of work is verified by other Bitcoin nodes each time they receive a block. Bitcoin uses the hashcash proof-of-work ... Bitcoin Q&A Proof-of-Work (PoW), Proof-of-Stake (PoS), Delegated Proof-of-Stake (DPoS) Blockchain proof of work Explained & my opinion on this tech - Duration: 22:52. Hussein Nasser 900 views. ... How transactions are verified in Bitcoin Blockchain - Longest chain rule explained ...

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