Vanity Wallet Generator

Problem

Ethereum addresses are a 20-byte keccak hash of a public key — opaque and interchangeable from the user’s perspective. Vanity addresses (custom prefixes or suffixes) let users and organizations carry a recognizable identifier on-chain, but generation requires brute-force keypair search and any tool that phones home with the resulting private key is an immediate custody risk. A local, auditable generator was needed.

Approach

• Local-only key generation: no network calls, no external services, so the private key never leaves the machine that produced it.
• ECDSA keypair generation using standard secp256k1 to match Ethereum’s address derivation exactly.
• Prefix and suffix pattern matching on the hex address for flexible targeting without constraining to a single format.
• Minimal dependency surface keeps the code reviewable end-to-end before a user trusts it with a key they intend to fund.

Implementation

Address Generation

• Custom prefix and suffix pattern matching
• High-performance key pair generation
• Ethereum-compatible address output

Security

• Local key generation with no external dependencies
• Private key handling with secure output

Outcome

• Python CLI that generates Ethereum-format vanity addresses matching user-defined prefix or suffix patterns.
• Fully local execution path with no external dependencies for key material.
• Auditable implementation small enough to review before trusting with production keys.

Technologies

• Language: Python
• Cryptography: ECDSA key pair generation
• Network: Ethereum address format