Reports say Bitcoin developers are advancing BIP-54 soft fork testing
BIBIBI
AT A GLANCE
BIP-54 aims to fix four types of consensus rule vulnerabilities in Bitcoin, and there has been progress in testing compatibility with mining pools.
Article
Bitcoin developers advance BIP-54 soft fork to fix four consensus rule vulnerabilities
PANews November 5 reports, according to CryptoBriefing, that Bitcoin's next major protocol upgrade may be a "major consensus cleanup" soft fork called BIP-54, aimed at fixing four vulnerabilities in the network's consensus rules that have existed since the protocol launched in 2009. The proposal targets time-warp attacks, "poison" blocks requiring prolonged verification, a 64-byte transaction vulnerability in Merkle trees, and replay risks caused by duplicate coinbase transactions. BIP-54 was first drafted by developer Matt Corallo in March 2019 and officially assigned a BIP number in April 2025. Test vectors were merged at the end of 2025, and testing began on the Bitcoin Inquisition Signet network in February 2026. MARA Pool and ViaBTC have already started producing compatible versions on the mainnet...
BIP-54 is described as a potential “major consensus cleanup” soft fork for Bitcoin.
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The proposal aims to fix four types of issues: time-warp attacks, “poisoned” blocks requiring lengthy verification, a 64-byte transaction vulnerability in Merkle trees, and replay risks caused by duplicate coinbase transactions.
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BIP-54 was first drafted by Matt Corallo in March 2019 and was assigned a BIP number in April 2025.
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The test vectors were merged at the end of 2025, and testing began on the Bitcoin Inquisition Signet network in February 2026.
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MARA Pool and ViaBTC have begun producing B-compatible on the mainnet…; The original text is truncated here.
AI-assisted interpretation
The following is analysis, separate from reported facts. Verify important claims independently.
A soft fork is a tightening of network rules that typically requires upgraded nodes to comply with the new rules. This paper states that the BIP-54 plan focuses on patching four categories of historical consensus rule issues in the Bitcoin protocol.
Why it matters to readers
If the proposal proceeds, it could affect the compatibility of Bitcoin clients, test networks, and mining pools; however, current evidence is mainly based on media reports, and the full text is incomplete.
This is not a confirmed completed upgrade. Beginners should first focus on the original proposal text, code, and test results, rather than interpreting testing or compatibility progress as already activated.
Risks and unknowns
The original text does not state whether BIP-54 has been officially activated.
The main text has been truncated, so the complete subsequent statement regarding “MARA Pool and ViaBTC” cannot be confirmed.
The evidence comes from PANews' report on CryptoBriefing, which did not provide the original BIP text, code records, or an official statement from the mining pool.
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Related concepts
soft fork
This term is not in the glossary yet. Browse related concepts in the glossary.
The first special transaction in a Bitcoin block, used to claim the block subsidy and transaction fees permitted by the rules; it does not use ordinary unspent outputs as inputs.
