Be careful with vanity address generators. A cryptocurrency market maker once lost around $160,000,000 in a vanity Ethereum address because the generator they used was only seeded with 32 bits of entropy.
https://www.forbes.com/sites/jeffkauflin/2022/09/20/profanit...
Indeed, be careful with anything that involves secret bits.
This tool uses proper crypto/rand initialisation of the starting key https://github.com/AlexanderYastrebov/onion-vanity-address/b...
Check out my other vanity generators (they all use crypto/rand):
https://github.com/AlexanderYastrebov/wireguard-vanity-key
https://github.com/AlexanderYastrebov/age-vanity-keygen
https://github.com/AlexanderYastrebov/ethereum-vanity-addres...