This post was first published on Medium. Read Delegation in Bitcoin.
We introduce a simple yet universal delegation mechanism, an alternative to the script-level delegation we have developed.
Transaction-Level Delegation
Let us say Alice wants to delegate her UTXO to Bob. She creates a transaction of two inputs: one spending her UTXO and the other spending Bob’s UTXO. She signs her input using sighash flag SIGHASH_NONE, meaning all outputs of the transaction can be malleated. She…
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