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secp256k1_blake160_sighash_all

One of the CKB genesis Scripts, SECP256K1/blake160 (Source Code), is the default Lock Script used to verify transaction signatures on the CKB blockchain.

How It Works

This Script uses the secp256k1 signature algorithm. The verification process includes:

Extracting the public key hash from the args field.
Constructing the signing message by hashing the tx_hash and the witnesses.
Reading the signature data from the lock witness.
Recovering the public key using secp256k1_ecdsa_recover.
Hashing the recovered public key using CKB's Blake2b algorithm, then taking the first 20 bytes.
Comparing the recovered public key hash to the one provided in args.

Deployment

Mainnet

parameter	value
`code_hash`	`0x9bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8`
`hash_type`	`type`
`tx_hash`	`0x71a7ba8fc96349fea0ed3a5c47992e3b4084b031a42264a018e0072e8172e46c`
`index`	`0x0`
`dep_type`	`dep_group`

Testnet

parameter	value
`code_hash`	`0x9bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8`
`hash_type`	`type`
`tx_hash`	`0xf8de3bb47d055cdf460d93a2a6e1b05f7432f9777c8c474abf4eec1d4aee5d37`
`index`	`0x0`
`dep_type`	`dep_group`