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Results tagged with taproot
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user 139306
Taproot is a Bitcoin softfork activated in 2021. It introduced a new output type, P2TR (Pay to Taproot), which uses the Schnorr signature scheme and combines a public key with an optional script tree. The public key can additionally be an aggregation of multiple keys, which enables cheaper and more private multisignature transactions.
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How to choose a nothing-up-my-sleeve (NUMS) point on secp256k1 for use in Taproot?
In BIP-341, an example NUMS point is given, along with a cautionary note about leaking information:
One example of such a point is H = lift_x(0x0250929b74c1a04954b78b4b6035e97a5e078a5a0f28ec96d547bfe …
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1
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1
answer
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How to choose a nothing-up-my-sleeve (NUMS) point on secp256k1 for use in Taproot?
Per BIP-341, if you want to create a Taproot output that is only spendable via the script-path spend (and not a key-path spend), you must "pick as internal key a point with unknown discrete logarithm." …
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