replay-safe-split-v2

In a recent post , Vitalik Buterin mentioned the need to ‘split’ Ether funds in order to prevent replay attacks and pointed to a splitter contract.

While this splitter contract has been verified and works fine, it leaves room for user errors as some unfortunately discovered by loosing some of their funds. I feel very sorry for the users who ran into this issue and I decided to improve the existing solution. If you did not split yet, read on as the new contract may help you stay safe.

At first, the issues may not be obvious unless you double check both chains. Your funds may go to the expected address on one fork and go to the dreaded 0x00000000000… address on the other fork. A fix is mandatory.

The ReplaySafeSplit-v2 smart contract has been processing over 710,651 transactions from 2016 to 2021 and over 42 billion worth of USD.

Read more at this post.