{"content":"The origins of the \"commit and reveal\" mechanism in PSBT  are primarily due to two reasons:\n\nPrivacy Protection: When collaboratively constructing a transaction, the participating parties do not want to expose the details of their transaction prematurely, such as inputs, outputs, and fees. By first \"committing\" the transaction hash and then \"revealing\" the complete transaction data, the parties can ensure the final consistency of the transaction while maximizing the protection of each party's privacy.\n\nReliability Verification: In a multi-party collaboration scenario, each participant needs to ensure that the transaction data provided by the others is reliable and has not been tampered with. Through the \"commit and reveal\" mechanism, the participants can first verify the hash values provided by the others, ensuring that the final \"revealed\" transaction data is consistent with the previous commitments.","contentType":"text/plain"}