Ethereum’s Muir Glacier will be activated on 01 January

  • Ethereum will conduct its next hard fork, Muir Glacier, on schedule at block 9,200,000.
  • Activation is expected to occur on January 1, although variable block times may still affect the exact timing.

The Ethereum mainnet is scheduled to upgrade to Muir Glacier at Block 9,200,000. The hard fork is expected to be activated on Wednesday, January 1, 2020. The exact date may still change due to variable block times. Both the Ethereum Foundation and various developers from the Ethereum ecosystem have requested the node operators to update their software before 1 January 2020.

Node operators must update to Geth v1.9.9, Parity v2.5.12-stable, Besu v1.3.7, Nethermind v1.2.6, ethereumJS v4.1.2 or Aleth v1.8.0. Harmony (ethereumJ) will not support the fork and is henceforth an outdated client. At the time of writing 55.5% of all nodes have already updated.

Ethereum Muir Glacier


Ethereum owners who keep their Ether (ETH) on an exchange (such as Coinbase or Binance), a web wallet service (such as Metamask or MyEtherWallet), a mobile wallet (such as Guarda Wallet or Trust Wallet) or a hardware wallet (such as Ledger, Trezor or KeepKey) do not have to do anything unless they are requested to do so by the exchange or the wallet provider.

What is the Muir Glacier?

The Muir Glacier hard fork merely contains an Ethereum Improvement Proposal, EIP 2387, which delays the Difficulty Bomb by 4 million blocks, equivalent to about 1.7 years. The proposal was first published at the end of November with EIP 2384 and later concretized by James Hancock with EIP 2387.

The Difficulty Bomb is a part of the Difficulty Retargeting Mechanism, which is integrated into Ethereum’s Proof of Work algorithm. This mechanism ensures a constant block time by…

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