# Changes to BIP-360 - Pay to Quantum Resistant Hash (P2QRH)

**URL:** <https://delvingbitcoin.org/t/changes-to-bip-360-pay-to-quantum-resistant-hash-p2qrh/1811>\
**Category:** Protocol Design\
**Tags:** post-quantum, announcement, softfork\
**Created:** [July 7, 2025, 4:01pm UTC](https://delvingbitcoin.org/t/changes-to-bip-360-pay-to-quantum-resistant-hash-p2qrh/1811 "2025-07-07T16:01:15Z")\
**Posts on this page:** 1\
**Showing post:** 32

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**Author:** ![jeanpablojp](https://delvingbitcoin.org/user_avatar/delvingbitcoin.org/jeanpablojp/32/2279_2.png) [@jeanpablojp](https://delvingbitcoin.org/u/jeanpablojp)\
**Post date:** [July 28, 2026, 9:43pm UTC](https://delvingbitcoin.org/t/changes-to-bip-360-pay-to-quantum-resistant-hash-p2qrh/1811/32 "2026-07-28T21:43:21Z")

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I implemented BIP 360 in Bitcoin Core on regtest as an independent exercise and ran it against the official test vectors: all construction vectors pass, and the pqc vector file turned out to carry two bugs (fixes submitted as [bitcoin/bips#2220](https://github.com/bitcoin/bips/pull/2220), with doc fixes in [#2221](https://github.com/bitcoin/bips/pull/2221) and a correction to the claimed witness size saving in [#2223](https://github.com/bitcoin/bips/pull/2223)).

Full write-up with measured witness sizes and some spec feedback: [BIP 360 (P2MR) implemented in Bitcoin Core on regtest: vector results, measurements, spec feedback](https://delvingbitcoin.org/t/bip-360-p2mr-implemented-in-bitcoin-core-on-regtest-vector-results-measurements-spec-feedback/2751)

One gap worth flagging here: the official vectors are construction-only, so consensus spend-path testing has no shared oracle yet. I’m happy to generate and contribute spend-path vectors upstream if that would be useful.

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_[View the full topic](https://delvingbitcoin.org/t/changes-to-bip-360-pay-to-quantum-resistant-hash-p2qrh/1811)._