# Ultimate Digits Public Documentation

## Ultimate Digits Public Documentation

- [Why Ultimate Digits?](https://docs.ultimatedigits.com/why-ultimate-digits.md): Ultimate Digits is a public good, a basic piece of the digital payments infrastructure that belongs to the community.
- [About Ultimate Digits](https://docs.ultimatedigits.com/about-ultimate-digits.md): Ultimate Digits is a public good, a basic piece of the digital payments infrastructure that belongs to the community.
- [Why Now](https://docs.ultimatedigits.com/why-now.md): Ultimate Digits is a public good, a basic piece of the digital payments infrastructure that belongs to the community.
- [Our Vision](https://docs.ultimatedigits.com/our-vision.md): Ultimate Digits is a public good, a basic piece of the digital payments infrastructure that belongs to the community.
- [Token ($ULT)](https://docs.ultimatedigits.com/token-usdult.md): Ultimate Digits is a public good, a basic piece of the digital payments infrastructure that belongs to the community. $ULT is the native protocol token for Ultimate Digits.
- [Technical Overview](https://docs.ultimatedigits.com/technical-overview.md): Ultimate Digits is a public good, a basic piece of the digital payments infrastructure that belongs to the community.
- [Salting & Hashing](https://docs.ultimatedigits.com/salting-and-hashing.md): This is the mechanism we use to protect the privacy of users' mobile numbers on-chain at Ultimate Digits.
- [Zero Knowledge in Ultimate Digits](https://docs.ultimatedigits.com/zero-knowledge-in-ultimate-digits.md): This describes the various methods we employ to secure handle users' mobile number changes in Ultimate Digits.
- [Protocol Roadmap](https://docs.ultimatedigits.com/protocol-roadmap.md): Ultimate Digits is a public good, a basic piece of the digital payments infrastructure that belongs to the community.