Bitcoin BIP-110 Mandatory Signal Window to Open in Two Weeks with 2.64% Support

ChainCatcher report: The mandatory signaling window for Bitcoin BIP-110 will open at block 961632, expected around August 9, 2026. As of the current chain height of 959842, approximately 1,790 blocks remain until this point, with BIP-110 signaling support at around 2.64%. BIP-110, formally named "Reduced Data Temporary Softfork," proposes limiting the size of certain data fields in Bitcoin transactions, primarily targeting Ordinals inscriptions, large OP_RETURN payloads, and similar high-data-use cases. If activated, the restrictions will take effect at block 965664 and automatically expire after 52,416 blocks—approximately one year. Current signaling support primarily comes from Ocean, independent miners, and small operators. Major mining pools such as Foundry, Antpool, ViaBTC, and F2pool have not yet switched to support. Foundry has instructed its customers to vote based on average hash rate; the pool will only switch all its blocks to signal support if "yes" votes exceed 51% of the weighted participating hash rate. If current signaling levels persist until block 961632, nodes that have upgraded to enforce BIP-110 will reject blocks that do not signal version bit 4 and will follow the minority chain that does signal. Unupgraded nodes will continue accepting both signaled and non-signaled blocks and will follow the chain with the highest cumulative proof-of-work.