G-Address: Stellar public keys are Ed25519 addresses encoded in Base32. The first character is always 'G'. This tool generates random seeds until the resulting public key matches your desired prefix.

C-Address: Soroban Contract IDs are derived using a hash of the deployer's address and a 32-byte salt. By varying the salt, we can "pre-mine" a specific Contract ID.

Note: This simulation uses a standard SHA-256 hash of (Deployer + Salt) to illustrate the concept. Real Soroban derivation involves XDR preimages and Env ID hashes.