Bitcoin holders are facing a potential security risk as a planned fork tied to the controversial BIP-110 proposal could create duplicate balances on two chains. This could lead to a replay attack, where selling the forked coins triggers a replay that also spends the seller's real bitcoin on the main chain. Developers warn that without built-in replay protection until early September, the safest course for non-experts is to avoid moving coins during the potential split. Kevin Loaec, a Bitcoin developer, flagged the risk on X, stating that large holders could be targeted first. The issue stems from BIP-110, which aims to keep data like images and text out of Bitcoin transactions for a year. This proposal requires miners to agree and mark their blocks, but it also includes a fallback mechanism that could lead to a split if some miners continue building a BIP-110-compatible branch while others mine Bitcoin as usual. The potential split creates a security risk for those who believe they will get an 'airdrop' and want to sell, as it could result in the loss of real Bitcoin. The replay attack is a critical concern, and the lack of automatic replay protection until September adds to the complexity. This situation highlights the importance of caution and careful consideration for Bitcoin holders, especially those who are not well-versed in the technical aspects of the fork.
