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zeta-chain / node

ZetaChain’s blockchain node and an observer validator client
https://zetachain.com
MIT License
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Implement `verifyInTxBody` for Bitcoin transactions #1993

Open lumtis opened 6 months ago

lumtis commented 6 months ago

Describe the Issue The function verifyInTxBody used to verify the body of the tx when adding a in tracker in a permissionless way is only implemented for EVM chain.

The implementation needs to be added for Bitcoin, it is already implemented for VerifyOutTxBody

jacksoom commented 2 months ago

Hi teams .I want to contribute this issue. pls help me review these verification conditions

verification conditions 1： first output must be addressed to the TSS Bitcoin address. 2：The second output must be a memo output, i.e. OP_RETURN PUSH_x [DATA]. This output must be less than 80 bytes. 3：rawtx.hash == msg.TxHash

  1. tx come from valid chain network(mainnet/testnet/regtest)

cond 1/2 come from zetachain docs.
Q: Does the BTC inbound transaction contain multiple cointypes? btc/gas

@lumtis