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Use sighash single + anyonecanpay for redemption txns #308

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prestwich opened this issue Oct 1, 2019 · 0 comments
Open

Use sighash single + anyonecanpay for redemption txns #308

prestwich opened this issue Oct 1, 2019 · 0 comments
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enhancement New feature or request

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@prestwich
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Right now redemption txns use sighash ALL. Updating them to use sighash single+anyonecanpay would allow for future off-chain fee-bumping protocol extensions, e.g. a third-party paying some fee by appending inputs/outputs to the in-flight txn

This is a relatively simple change. It would require the implementation of a sighashSACP in bitcoin-spv's CheckBitcoinSigs library, and then swapping out oneInputOneOutputSighash for sighashSACP
@prestwich prestwich added the enhancement New feature or request label Oct 1, 2019
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