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From: Olaoluwa Osuntokun <laolu32@gmail.com>
Date: Sun, 24 Aug 2025 20:50:39 -0400
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Subject: [bitcoindev] [BIP Proposal] Elliptic Curve Operations for Bitcoin Script
To: Bitcoin Development Mailing List <bitcoindev@googlegroups.com>
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Hi y'all,
I've just published a draft of a BIP to add Elliptic Curve operation op
codes
as a soft fork utilizing the existing Taproot infrastructure and current tap
leaf version.
My primary motivation is enabling the commutation of the top level Taproot
output public key within Bitcoin Script. Alongside introspection enabling op
codes, this enables the creation of a new flavor of on-chain state machine
within Bitcoin Script. The set of op codes is also generic enough to enable
several other use cases related to (optimized DLCs, partial musig2 signature
verification, EC based sigma protocols, etc).
A total of 4 op codes are proposed (each allocated from the existing
OP_SUCCESS) range:
* `OP_EC_POINT_ADD`
* `OP_EC_POINT_MUL`
* `OP_EC_POINT_NEGATE`
* `OP_EC_POINT_X_COORD`
The full BIP text can be found here:
* https://github.com/bitcoin/bips/pull/1945
A reference implementation in `btcd` can be found here:
* https://github.com/btcsuite/btcd/pull/2413
--Laolu
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--00000000000068bd93063d25f2ff
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<div dir=3D"ltr">Hi y'all,<br><br>I've just published a draft of a =
BIP to add Elliptic Curve operation op codes<br>as a soft fork utilizing th=
e existing Taproot infrastructure and current tap<br>leaf version.<br><br>M=
y primary motivation is enabling the commutation of the top level Taproot<b=
r>output public key within Bitcoin Script. Alongside introspection enabling=
op<br>codes, this enables the creation of a new flavor of on-chain state m=
achine<br>within Bitcoin Script. The set of op codes is also generic enough=
to enable<br>several other use cases related to (optimized DLCs, partial m=
usig2 signature<br>verification, EC based sigma protocols, etc).<br><br>A t=
otal of 4 op codes are proposed (each allocated from the existing<br>OP_SUC=
CESS) range:<br>=C2=A0 * `OP_EC_POINT_ADD`<br>=C2=A0 * `OP_EC_POINT_MUL`<br=
>=C2=A0 * `OP_EC_POINT_NEGATE`<br>=C2=A0 * `OP_EC_POINT_X_COORD`<br><br>The=
full BIP text can be found here: <br>=C2=A0* <a href=3D"https://github.com=
/bitcoin/bips/pull/1945">https://github.com/bitcoin/bips/pull/1945</a><br><=
br>A reference implementation in `btcd` can be found here:<br>=C2=A0 * <a h=
ref=3D"https://github.com/btcsuite/btcd/pull/2413">https://github.com/btcsu=
ite/btcd/pull/2413</a><br><br>--Laolu<br></div>
<p></p>
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--00000000000068bd93063d25f2ff--
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