Skip to content

initcode-spec.md

Latest commit

 

History

History
37 lines (23 loc) · 1.58 KB

initcode-spec.md

File metadata and controls

37 lines (23 loc) · 1.58 KB
Raw

4337 initcode summary spec

Needed if and only if the account is not yet on-chain and needs to be created.

EoA Owner example

Address: 0xFd4eC985482E1ed2b651293025EDaD889FaC3947 Private key: 0xcddd3f0ae3a7e2024ea73fd74d25e55ebc1849dcbc25eb61d39508d2c5a1a85b

Value for a non-existing wallet in Ethereum Mainnet

0xFactoryAddress+CalldataOfFactoryCallToCreate4337Account

Complete initcode value example:

0x42E60c23aCe33c23e0945a07f6e2c1E53843a1d55fbfb9cf000000000000000000000000fd4ec985482e1ed2b651293025edad889fac39470000000000000000000000000000000000000000000000000000000000000000

20 bytes for the factory address, i.e.

cast code 0x42E60c23aCe33c23e0945a07f6e2c1E53843a1d5 -r https://virtual.mainnet.rpc.tenderly.co/c4100609-e3ff-441b-a803-5a4e95de809f

Note the hex calldata corresponding to the call to create an account using the createAccount contract function, i.e.

cast 4byte-decode 5fbfb9cf000000000000000000000000fd4ec985482e1ed2b651293025edad889fac39470000000000000000000000000000000000000000000000000000000000000000
1) "createAccount(address,uint256)"
0xFd4eC985482E1ed2b651293025EDaD889FaC3947 // owner address
0 // salt

Note the owner address, i.e., metamask or EOA address that signs the userOp. In this case it is 0xFd4eC985482E1ed2b651293025EDaD889FaC3947

Avoiding the AA14 initCode must return sender error

The sender of the userOp creating this account can only be the value returned when calling factory.getAddress(owner, salt) which in this example when invoking it in Ethereum Mainnet would be 0x400e8eaefa99f620b2280a2afa47df2a6d016387