Hey all, I wanted to propose a new key in the global context for BIP174, Partially-Signed Bitcoin Transactions.
= Rationale Each signer should make sure that the inputs being referenced in the PSBT exist (with the exception of a Proof-of-Reserves input). In order to do this, it's critical to know which network the coins are on (mainnet or testnet). This could potentially be extended to other networks should they want to use something like PSBT, much in the same way that HD keys from BIP0044 reserved 0' and 1' as coins for mainnet Bitcoin and testnet Bitcoin respectively. = Proposal Add the key 0x03 for network in the global key-value store. Value is a variable integer with 0x00 indicating Bitcoin mainnet and 0x01 indicating Bitcoin testnet. Other coins that want to use the PSBT should use the coin network number from SLIP-0044 with the high bit removed. --------------------------- Best, Jimmy
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