380: Disallow H as a hardened indicator #1888

1. 
   achow101 commented at 9:33 pm on July 1, 2025: member

   It seems that there are few/no software that produce descriptors using H, while few accept it during parsing. As neither of the reference implementations of Bitcoin Core nor rust-miniscript support H at all, it seems to be better to remove H as a hardened indicator from the BIP rather than updating all of the existing software.

   I asked about this on the mailing list last week and have received no responses. There was also some discussion in https://github.com/bitcoin/bitcoin/pull/32788.

2. 380: Disallow H as a hardened indicator 3cc71d7c22
3. jonatack added the label Proposed BIP modification on Jul 2, 2025
4. 
   Sjors commented at 3:09 pm on July 2, 2025: member

   Concept ACK.

   ACK 3cc71d7c22e941987e1c79cae64f08d989a1e62b

5. 
   scgbckbone commented at 6:33 am on July 3, 2025: contributor

   ACK

   https://github.com/bitcoin/bips/pull/1888/commits/3cc71d7c22e941987e1c79cae64f08d989a1e62b

6. 
   rkrux commented at 9:27 am on July 3, 2025: contributor

   ACK 3cc71d7c22e941987e1c79cae64f08d989a1e62b

   I asked about this on the mailing list last week and have received no responses. There was also some discussion in https://github.com/bitcoin/bitcoin/pull/32788.

   This question was mentioned in Optech Newsletter 360 also.

7. 
   murchandamus commented at 5:42 pm on July 3, 2025: contributor

   LGTM. Did you want to go ahead or do you want to wait a bit longer?
8. 
   achow101 commented at 8:09 pm on July 3, 2025: member

   I think we can go ahead
9. murchandamus merged this on Jul 3, 2025
10. murchandamus closed this on Jul 3, 2025

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Contributors
achow101 Sjors scgbckbone rkrux murchandamus

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Proposed BIP modification