A RedeemScript is the script used to unlock bitcoin sent to a P2SH or P2WSH address.
A RedeemScript is the script used to unlock bitcoin sent to a P2SH or P2WSH address. In a P2SH or P2WSH transaction, bitcoin is locked to the hash of a RedeemScript, ensuring that only someone who can reproduce the RedeemScript and add any required signatures can spend the bitcoin. Redeem scripts most commonly entail multisig scripts or wrapped SegWit scripts.
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