Vanity keypairs are of interest to many. Standard ed25519 keypairs cannot be grinded out on behalf of users in a trustless manner because grinding it gives the producer access to the secret key (Threshold signatures are an exception to this but we leave this story for a later time).

Squads v4 multisig pubkeys are based on a create_key pubkey that serves as a nonce. This means that a multisig address can be grinded out to obtain a target prefix. Then, since multisigs offer the ability to manage members, it is possible to atomically transfer ownership and collect payment for the multisig. As such, this program intends to be a rudimentary vanity multisig marketplace.

Fun fact: experiments on Apple M2 Max show that griding multisig addresses by searching for an offcurve create_key signer (e.g. auxiliary pda) is ≈20-25% faster than generating ed25519 keypairs.

1. A smart contract implementation of a rudimentary multisig marketplace. It facilitates the listing and selling of vanity multisigs.
2. Off-chain address grinder.

The contract is found in auxiliary. It contains two instructions. One initializes an auxiliary account which manages the multisig. The other allows a buyer to buy a listed multisig. THIS CONTRACT IS CURRENTLY UNAUDITED. USE AT YOUR OWN RISK. THE AUTHOR IS NOT LIABLE FOR ANY LOSS OF FUNDS OR EXPLOITS DISCOVERED.

The grinder is found in grind. Presently, only a small fixed set of targets are searched for. This can be expanded. We leave this as an exercise to the reader. In grind/src/bin/pda.rs, you must be careful about whether you are grinding keys for the staging or prod squads v4 program.

To grind: cargo run --release --bin pda

TODO/NOTE: The auxiliary program used by this grinder will most definitely not be the one corresponding to the test keypair AuxokT3REMom8yP5TvuJQaUQUjtkHooQ48hTSQZiYd7W.json that can be found at the root of the repo.