Ethereum developer Piper Merriam opened Ethereum Improvement Proposal (EIP) #958 on Github on March 30, presenting the idea of a possible hard fork in the Ethereum (ETH) protocol to invalidate ETH ASICs.
Both developers’ polls emerge amid rumors that the China-based ASIC manufacturer Bitmain is on the brink of shipping its first Ethash compatible ASIC miners. Ethash is the Proof-of-Work (PoW) hashing algorithm used by Ethereum and a variety of other altcoins.
Buterin’s Ethereum White Paper suggests the protocol already has a twofold resistance to mining centralization.
First, the algorithm requires miners to return the hash for data that has been “randomly selected” from transactions in the preceding block. Since “Ethereum contracts can include any kind of computation,” “an Ethereum ASIC would essentially be an ASIC for general computation – ie. a better CPU.”
The second means of defence is to “poison the well,” which Vitalik characterises as “ultimately an adaptive human solution rather than a technical one.” If a certain type of computation becomes prevalent, then conventional miners can introduce “a large number of contracts into the Blockchain specifically designed to stymie certain ASICs”.
As Cointelegraph reported in February, Bitmain’s profits outstripped the US GPU giant Nvidia in 2017. Research by Bernstein analysts estimated Bitmain’s profits to be between $3-4 bln for 2017, holding 70-80 percent of the market for BTC miners and ASICs.
Ethereum’s informal poll regarding a possible hard fork follows Monero’s rejection of centralized hashpower last month. Monero devlead Riccardo Spagni warned that the coin’s protocol would be changed every six months to stymie ASIC monopolies. Rumors regarding possible deployment of Ethash compatible ASIC miners impacted Ethereum markets, according to some commentators.