Bitcoin’s BIP-110 mandatory signaling window is scheduled to begin at block 961632, which is estimated to arrive around Aug. 9, 2026. At chain height 959842, roughly 1,790 blocks remained before the window opened, while support for the proposal was running at about 2.64%. BIP-110, formally titled Reduced Data Temporary Softfork, proposes limits on the size of certain data fields in Bitcoin transactions. The measure is aimed mainly at Ordinals-style inscriptions, large OP_RETURN payloads, and other high-data uses. If activated, the restrictions would take effect at block 965664 and expire automatically after 52,416 blocks, or about one year. Current signaling support comes mainly from Ocean, independent miners, and smaller operators. Major mining pools including Foundry, Antpool, ViaBTC, and F2Pool have not shifted to support. Foundry has asked customers to vote based on average hashrate, and said it would only switch all blocks to signaling support if “yes” votes exceed 51% of participating weighted hashrate.
Bitcoin’s BIP-110 mandatory signaling window will open at block 961632, with the timing estimated at around Aug. 9, 2026, according to ChainCatcher.
At chain height 959842, about 1,790 blocks remained before that threshold. Signaling support for BIP-110 stood at roughly 2.64%.
What BIP-110 would do
BIP-110 is formally named Reduced Data Temporary Softfork. The proposal would limit the size of certain data fields in Bitcoin transactions, targeting Ordinals-style inscriptions, large OP_RETURN payloads, and similar high-data use cases.
If activated, the restrictions would take effect at block 965664. They would then expire automatically after 52,416 blocks, or about one year.
Who is signaling support
Current support is coming mainly from Ocean, independent miners, and small-scale operators. Major mining pools including Foundry, Antpool, ViaBTC, and F2Pool have not moved to support the proposal.
Foundry has asked customers to vote according to average hashrate. The pool said it would switch all blocks to signaling support only if “support” votes exceed 51% of participating weighted hashrate.
How upgraded and non-upgraded nodes would behave
If the current level of signaling remains in place through block 961632, nodes enforcing BIP-110 would reject blocks that do not signal version bit 4 and would follow the minority chain that does signal.
Nodes that have not upgraded would continue to accept both signaling and non-signaling blocks, and would follow the chain with the greatest cumulative proof of work.
This article was originally published by Bit.Fan. For more cryptocurrency news and market insights, visit www.bit.fan. Disclaimer:
The market information, project data, and third-party content displayed on this platform are for industry information sharing only and do not constitute any form of investment advice or return commitment.
Cryptocurrency trading carries high risks. Users should fully assess their risk tolerance and make independent decisions. All profits, losses, and legal responsibilities are borne by the users themselves.
