0xdeadbeef

Tool used for computing vanity Gnosis Safe addresses.

This tool is quite limited in that it only supports the v1.3.0 Safe deployment:

• GnosisSafeProxyFactory 0xa6B71E26C5e0845f74c812102Ca7114b6a896AB2
• GnosisSafe 0xd9Db270c1B5E3Bd161E8c8503c55cEABeE709552

Since this version of the Safe proxy factory uses CREATE2 op-code, we can change the final address by fiddling with the user-specified saltNonce parameter. It works by randomly trying out different values for the saltNonce parameter until it find ones that creates an address matching the desired prefix.

Building

For longer prefixes, this can take a very long time, so be sure to build with release:

cargo build --release

Usage

deadbeef OWNER_ADDRESS PREFIX

For example, to generate calldata for creating a Safe with an initial owner of 0x0102030405060708091011121314151617181920 and prefix 0xdeadbeef:

deadbeef 0x0102030405060708091011121314151617181920 0xdeadbeef

This will output some result like:

address:    0xdeadbeef57a22ef9446d6c0643308a8cf8ed9fa1
factory:    0xa6b71e26c5e0845f74c812102ca7114b6a896ab2
salt_nonce: 0xd7ed00a81a6f2224c77d7272f7a10fba0d0db7f619f01c90a2365f0f5c1ea42c
calldata:   0x1688f0b9...

Creating the Safe

The above command will generate some calldata for creating a safe with a single inital owner with a 1/1 threshold. To create the safe, simply execute a transaction to the factory address with the generated calldata. This can be done in MetaMask directly for example.

Don't forget to configure owners and threshold after creating the Safe!