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Merge pull request #125 from fjahr/patch-1

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Link design section of BIP Schnorr in Specification
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Pieter Wuille 2019-11-06 07:44:44 -08:00 • committed by GitHub
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@ -50,7 +50,7 @@ Not included in this proposal are additional features like new sighash modes or
This section specifies the Taproot consensus rules. Validity is defined by exclusion: a block or transaction is valid if no condition exists that marks it failed.
The notation below follows that of bip-schnorr. This includes the ''hash<sub>tag</sub>(x)'' notation to refer to ''SHA256(SHA256(tag) || SHA256(tag) || x)''. To the best of the authors' knowledge, no existing use of SHA256 in Bitcoin feeds it a message that starts with two single SHA256 outputs, making collisions between ''hash<sub>tag</sub>'' with other hashes extremely unlikely.
The notation below follows that of [https://github.com/sipa/bips/blob/bip-schnorr/bip-schnorr.mediawiki#design bip-schnorr]. This includes the ''hash<sub>tag</sub>(x)'' notation to refer to ''SHA256(SHA256(tag) || SHA256(tag) || x)''. To the best of the authors' knowledge, no existing use of SHA256 in Bitcoin feeds it a message that starts with two single SHA256 outputs, making collisions between ''hash<sub>tag</sub>'' with other hashes extremely unlikely.
=== Script validation rules ===