witnet-vanity

A simple CLI tool to generate Witnet vanity addresses, i.e. starting with wit or twit. Optionally, other prefixes can be configured by using the CLI option hrp.

Similar to a vanity license plate, a vanity cryptocurrency address starts with a specific pattern. Generating such an addresses requires a significant amount of work as they are found by generating random Secp256k1 keypairs and checking if the derived addresses follow the requested patterns. Therefore, the longer the pattern the harder it is to found a match.

I just thought of something. Eventually there'll be some interest in brute force scanning bitcoin addresses to find one with the first few characters customized to your name, kind of like getting a phone number that spells out something. Just by chance I have my initials.

— Satoshi Nakamoto in an email to Hal Finney in 2009

Witnet vanity addresses are are inspired in the BIP 0173 and they follow the Bech32 format. However, in Witnet SHA256 is used in order to derived addresses from Secp256k1 public keys.

Usage

The CLI tool provides the following options:

```bash ⇒ cargo run --release -- -h

Witnet vanity address generator 0.1.0 Stampery Labs Vanity address generator using curve Secp256k1 and in Bech32 format: 1

USAGE: witnet-vanity [OPTIONS]

FLAGS: -h, --help Prints help information -V, --version Prints version information

OPTIONS: -H, --hrp Human-readable part of the vanity address (e.g. wit, twit, bc) [default: wit] -t, --threads Number of running threads executed in parallel [default: threads = num_cpus]

ARGS: Vanity prefix string to generate ```

Example

In the following example, an address with prefix 'm00n':

```bash ⇒ cargo run --release -- m00n

Searching vanity addresses with the prefix: wit1m00n

[00:00:19] [################################################################################] address found! (ETA: 0s)

Vanity address found: SK bytes: 6c3a17f2e4c6bcd62da0b661904dd0508fb5bbcf6267f8ceedfc3a60849a7b2d Private key: xprv1qq9qjt4xft2zyty744t7nuyergtulqhs52xrpcmt22hs3wzuk6tz6qrv8gtl9exxhntzmg9kvxgym5zs376mhnmzvluvam0u8fsgfxnm95s96kwv Address: wit1m00nj3eyzl5prcluexusfrcaf80fds6hhu5rxd ```

The tool outputs:

• private key bytes
• private key in xprv format (as it could be used to imported in witnet-rust node)
• address in bech32 format

License

witnet-vanity is published under the MIT license.