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BIP Draft: 24 nVersion bits for general purpose use#2116

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TheBlueMatt wants to merge 2 commits intobitcoin:masterfrom
TheBlueMatt:2026-02-more-bits
Open

BIP Draft: 24 nVersion bits for general purpose use#2116
TheBlueMatt wants to merge 2 commits intobitcoin:masterfrom
TheBlueMatt:2026-02-more-bits

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@murchandamus murchandamus added New BIP PR Author action required Needs updates, has unaddressed review comments, or is otherwise waiting for PR author labels Mar 5, 2026
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Addressed feedback.

@murchandamus murchandamus removed the PR Author action required Needs updates, has unaddressed review comments, or is otherwise waiting for PR author label Apr 6, 2026
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Concept ACK

Just got that one outstanding comment that should be incorporated.

Non-upgraded nodes will interpret the reserved bits of this proposal as signals for soft forks, and
may additionally activate the warning system for unknown soft forks.

At the time of writing no known soft forks are pending using any of 24 bits reserved in this BIP,
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I saw AJ point out that there was a CTV deployment attempt that uses bit 5. I don’t think knowledge of that is widespread, but that should probably be addressed in the backwards compatibility section here.

@murchandamus murchandamus changed the title Add a BIP to define 24 bits of nVersion as nonce space not 16 BIP Draft: 24 nVersion bits for general purpose use Apr 6, 2026
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