Implement Threshold Signatures for a Multi-Sig Custody Service
Overview
What this challenge is about.
Implement a 3-of-5 FROST multi-sig ceremony in Rust and broadcast a Bitcoin signet transaction. Earn a verifiable certificate.
The scenario
The custody provider (around USD 28M ARR, SOC 2 Type II, registered with FinCEN) needs a path off on-chain multi-sig before a regulator review in 5 months.
The Brief
What you'll do, and what you'll demonstrate.
Implement a 3-of-5 FROST signing ceremony and prove it produces a valid Schnorr signature accepted by Bitcoin signet.
Earning criteria — what you'll demonstrate
- Implement a state-of-the-art threshold-signature scheme from an IETF draft
- Reason about distributed key generation and rogue-key attacks
- Integrate cryptographic primitives with a real blockchain testnet
- Document the operational ceremony for non-crypto operators
Program Fit
Where this fits in your program.
Sharpens the same skills your degree expects you to demonstrate.
Aligned coursework coming soon.
Skills
Skills you'll demonstrate.
Each one shows up on your verified credential.
- Applied Cryptography
Apply applied cryptography to solve real industry problems and demonstrate production-level capability.
- Threshold Signatures
Apply threshold signatures to solve real industry problems and demonstrate production-level capability.
- Rust
Apply rust to solve real industry problems and demonstrate production-level capability.
- Schnorr Signatures
Apply schnorr signatures to solve real industry problems and demonstrate production-level capability.
- Protocol Design
Apply protocol design to solve real industry problems and demonstrate production-level capability.
- Documentation
Apply documentation to solve real industry problems and demonstrate production-level capability.
Careers
Career paths this challenge builds toward
Completing this challenge demonstrates skills that transfer directly to these roles: