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vaults: add backwards compatibility

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James O'Beirne committed 2023-03-23 13:24:17 -04:00
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@@ -635,6 +635,18 @@ Script descriptors for vault-related outputs will be covered in a subsequent BIP
TBD
== Backwards compatibility ==
<code>OP_VAULT</code> and <code>OP_UNVAULT</code> replace, respectively, the witness v1-only opcodes OP_SUCCESS187 and OP_SUCCESS188 with
stricter verification semantics. Consequently, scripts using those opcodes which previously were valid will cease to be valid with this change.
Stricter verification semantics for an OP_SUCCESSx opcode are a soft fork, so existing software will be fully functional without upgrade except for mining and block validation.
Backwards compatibility considerations are very comparable to previous
deployments for OP_CHECKSEQUENCEVERIFY and OP_CHECKLOCKTIMEVERIFY (see [https://github.com/bitcoin/bips/blob/master/bip-0065.mediawiki BIP-0065]
and [https://github.com/bitcoin/bips/blob/master/bip-0112.mediawiki BIP-0112]).
== Rationale ==
<references />