Tech 26 December 2018

Paul How

Vitalik Buterin doesn’t believe in proof of work

He’s hinted at it several times before, but Vitalik Buterin has finally declared that he does not believe in the proof-of-work (PoW) system which Ethereum, the platform he co-founded, uses.

The self-proclaimed non-giver of Ether tweeted on Christmas Day that “I don’t believe in proof of work!” When pressed for further explanation, he agreed with a commenter that PoW was a mere phase in the evolution of blockchain.

Ethereum has had to deal with issues such as vulnerability of ERC-20 smart contracts, and a continued inability to scale, making for high transaction costs.

It’s not surprising that Buterin has nothing good to say about Bitcoin SV, whose development has largely been about a continued increase in block size limits, to 128MB at present. nChain, developer of the Bitcoin SV implementation, has spoken in affirmation of PoW and its importance to the security and stability of the network.

Buterin, in a tweet, said, “I have my disagreements with the bitcoin roadmap, PoW, etc but they’re trying to do something that’s genuinely cool tech. BSV is a pure dumpster fire.”

To solve Ethereum’s scaling problem, Buterin has proposed sharding, where transactions are split among nodes as a way to accommodate more transactions at a time. On Reddit, Buterin has indicated his belief that sharding would require a more complex system than that of the present Ethereum network.

In Buterin’s view, sharding will come about when “all the existing PoW-related complexity… can be removed,” and will involve a shift to proof of stake (PoS) as a means of adding transactions to the blockchain. No definite timeframe for this has been given.

Sharding itself has been criticized by nChain Chief Scientist Dr. Craig Wright as a security risk, that “actually splits the security between multiple parties.” He added that big, non-sharded blocks themselves help to keep a blockchain more secure.

Note: Tokens on the Bitcoin Core (SegWit) chain are referenced as BTC coins; tokens on the Bitcoin Cash ABC chain are referenced as BCH, BCH-ABC or BAB coins.

Bitcoin Satoshi Vision (BSV) is today the only Bitcoin project that follows the original Satoshi Nakamoto whitepaper, and that follows the original Satoshi protocol and design. BSV is the only public blockchain that maintains the original vision for Bitcoin and will massively scale to become the world’s new money and enterprise blockchain.

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