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Answer by Pieter Wuille for Why does BIP-340 use secp256k1?

Couldn't it have used other curves, like Curve25519 and its signature schemes that are being used by many other projects?Curve25519 is a key agreement scheme, but if you're referring to the (related)...

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Why does BIP-340 use secp256k1?

If the entire Taproot/Schnorr soft-fork was going to implement an entirely new signing scheme anyway that was completely independent from the previous ECDSA scheme, why did it use secp256k1?Couldn't it...

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