bip-110

The Bitcoin BIP-110 mandatory signaling window will open at block 961632, expected around August 9, 2026. As of the on-chain height of 959842, there are about 1790 blocks remaining until that block, and the support rate for BIP-110 signaling is approximately 2.64%.BIP-110's formal name is Reduced Data Temporary Softfork, which proposes to limit the size of certain data fields in Bitcoin transactions, mainly targeting Ordinals type inscriptions, large OP_RETURN payloads, and similar high data volume uses. If activated, the restrictions will take effect at block 965664 and will automatically expire after 52416 blocks, approximately one year later.Current signaling support mainly comes from Ocean, independent miners, and small operators, while major mining pools such as Foundry, Antpool, ViaBTC, and F2pool have not yet shifted to support it. Foundry has requested clients to vote based on average hash power; only if "support" votes exceed 51% of the participating weighted hash power will the pool switch all blocks to support signaling. If the current signaling level persists until block 961632, nodes executing BIP-110 will reject blocks that do not emit version bit 4 signals and will follow the minority of blocks that do emit signals. Non-upgraded nodes will continue to accept both signaling and non-signaling blocks and will follow the chain with the highest accumulated proof of work.

Renowned analyst PlanB expressed opposition to the Bitcoin BIP-110 proposal, believing that those supporting the fork do not truly understand the decentralized nature of Bitcoin.The proposal aims to temporarily limit non-payment data on-chain through a soft fork, with the current miner support rate at approximately 1%.

The Bitcoin BIP-110 proposal is approaching its deadline in early August, with current miner support below 1% and the current cycle at 0, with no major mining pools supporting it. BIP-110, which stands for "Reducing Data Temporary Soft Fork," plans to limit OP_RETURN data capacity within a year, prohibiting most arbitrary data writes exceeding 256 bytes and restricting certain script formats primarily used for data storage. Strategy founder Michael Saylor and Blockstream co-founder Adam Back have both publicly opposed BIP-110.Data shows that BIP-110 adopts a user-activated soft fork mechanism, setting a 55% miner signal threshold, with the proportion of nodes running BIP-110 software in single digits, mainly from Bitcoin Knots users. The current signaling cycle for this proposal will end around block height 959,615, expected to enter a voluntary lock-up period in early August, with plans to activate around September. If widespread support is still lacking by then, it may lead to a minority of nodes forming a separate chain.

David Bailey, Chairman and CEO of the Nasdaq-listed Bitcoin treasury company Nakamoto, stated that the failure of the so-called "BIP-110" long-standing controversial event constitutes an "extreme benefit" for Bitcoin and believes it further validates the network's resistance to attacks and splits.This event is seen as a prolonged "governance layer conflict attempt" involving multiple games such as mining pool competition, client fork proposals, UASF (User Activated Soft Fork) mobilization, node consensus manipulation controversies, and large-scale information warfare surrounding social media and the developer community.David Bailey noted that this process validates the core characteristics of Bitcoin's governance structure: the final consensus is formed collectively by users, miners, developers, and industry participants, rather than being dominated by a single group. Historical similar events (such as BIP148) have proven that miners find it difficult to deviate from consensus, and this event further reinforces that conclusion, demonstrating the Bitcoin network's robust resistance to splits.

F2Pool co-founder Wang Chun stated on platform X that the Bitcoin protocol upgrade should not adopt practices similar to those of American politicians who forcefully advance "some necessary but unpopular provisions" through "omnibus bills." This is also a significant reason for his opposition to BIP-110 and BIP-54.In response to whether there were issues encountered when using any fixes for BIP-54, Wang Chun added that the Timewarp attack issue has been longstanding and does not provide significant advantages for miners, as it is impossible to predict who the next block miner will be. The only practical use is to disrupt certain altcoins, and since there are almost no actual benefits for Bitcoin miners, there is no urgent need for modifications.Furthermore, the efficiency of block verification has significantly improved due to libsecp256k1 and hardware upgrades, eliminating the need for protocol layer adjustments. The essence of "forging confirmed transactions" relies on breaking the double SHA256 collision, and if established, it would mean that Bitcoin core security has been compromised.Wang Chun added that the aforementioned issues are not sufficient to drive protocol modifications, and currently, only the "duplicate transactions" issue has some repair value, which may be one of the few changes worth implementing.

F2Pool co-founder Wang Chun expressed on the X platform regarding the BIP-110 controversy that Bitcoin should not be sanctified and criticized some Bitcoin extremists for hindering technological innovation.He pointed out that some supporters view attempts at scaling or functional improvements as "altcoin attacks," using moral accusations to cover up a lack of innovation, transforming Bitcoin from an economic concept into a system with ideological overtones. Wang Chun stated that in the context of the continuous development of DeFi, privacy, and payment infrastructure, Bitcoin should not become a system that is "too rigid to evolve."

The discussion surrounding Bitcoin Improvement Proposal BIP-110 continues to heat up. Bitcoin pioneer and Blockstream co-founder Adam Back retweeted to remind the community that Bitcoin's upgrade capability may be suppressed. This proposal, although described as a temporary soft fork to clean up "garbage data" on-chain to curb the on-chain data inflation brought by protocols like Ordinals, may hinder Bitcoin's future upgrade capabilities because it disables the OP_SUCCESS opcode in Tapscript, which is seen as an important reserved mechanism for future soft fork upgrades of Bitcoin.Additionally, BIP-110 will limit the Taproot control block size to 257 bytes, which may affect the development of potential Layer 2 technologies like BitVM that rely on extensive script execution. Although BIP-110 is positioned as a "temporary measure," Bitcoin soft fork upgrades typically require years of coordination, and restricting upgrade interfaces during this period may have long-term impacts.

According to market news, the Bitcoin network has seen the first block supporting the BIP-110 proposal, mined by the Ocean pool. This proposal aims to limit arbitrary non-financial data in blockchain transactions through a temporary soft fork over approximately one year. Supporters believe this can curb "junk" data that occupies block space, protect Bitcoin's role as a robust monetary infrastructure, and alleviate the burden on node operators. The proposal has sparked intense controversy within the community.Critics, including Blockstream CEO Adam Back, warn that intervention at the consensus layer could undermine Bitcoin's credibility, lead to discriminatory treatment of transactions, and violate the principle of transaction capacity neutrality. He also questioned the actual support for the proposal, stating it could increase the risk of blockchain splits.The controversy escalated further when a developer embedded a 66KB image in a Bitcoin transaction to oppose the core claim of BIP-110, demonstrating that a large amount of data can be encoded even without relying on OP_RETURN. This debate highlights the long-standing ideological divide within the Bitcoin community: whether to staunchly defend Bitcoin's pure positioning as a currency or to maintain maximum neutrality regarding arbitrary uses at the base layer.

SlovakBitcoin developer and RustBitcoin library maintainer Martin Habovštiak has released a proof of concept that writes a 66 kB TIFF image file to the Bitcoin blockchain through a single transaction without using OP_RETURN, Taproot, or OP_IF. The transaction can be publicly verified on-chain and can be decoded into a complete image file.This experiment is seen as a direct challenge to the "anti-spam" soft fork proposal BIP-110, promoted by Luke Dashjr. BIP-110 is a successor to BIP-444, which aims to limit the scale of on-chain data writing, with some supporters arguing that such data storage practices deviate from Bitcoin's core positioning as a "currency."

According to Cointelegraph, the number of Bitcoin nodes supporting Bitcoin Improvement Proposal 110 (BIP-110) has risen to 2.38%. This proposal is a temporary soft fork that limits the amount of data per transaction at the consensus level.According to data from The Bitcoin Portal, out of 24,481 nodes, 583 are running BIP-110, with the main node software implementation for this soft fork proposal being Bitcoin Knots. BIP-110 limits the size of transaction outputs to 34 bytes and sets the OP_RETURN data limit to 83 bytes. According to the proposal's description on its GitHub page, this temporary soft fork will be deployed for 1 year, after which it may be extended or modified. OP_RETURN is a script code that allows users to embed arbitrary data.Since the release of the latest version of the most widely used Bitcoin node software—Bitcoin Core 30—this feature has been a focal point of intense debate within the Bitcoin community. The OP_RETURN data limit was originally set to 83 bytes, but Bitcoin Core developers unilaterally removed this restriction in the Bitcoin Core 30 version. This change stemmed from a controversial code merge request first proposed in April 2025, which was widely opposed by the Bitcoin community.