❄️ Frost Testnet Faucet

Testnet FROST on the Frost L1.
No captcha: your browser mines an ML-DSA-44 keypair as proof of work. How it works →

Everything the page does is two HTTP calls plus grinding — fully scriptable, no browser needed. Native ML-DSA keygen is much faster than in-browser JS.

1. Get a challenge

GET /api/challenge?address=0xYOURADDRESS

{ "token": "…", "difficulty": 12, "expires_at": …,
  "algorithm": "ML-DSA-44",
  "rule": "SHA3-256(pk || token) must have 12 leading zero bits" }

2. Grind, sign, claim

Generate ML-DSA-44 keypairs until SHA3-256(pk || token) has difficulty leading zero bits (token as ASCII bytes, pk raw). Sign "frost-faucet-v1" || token || address (address lowercase hex, ASCII) with the ground secret key, then:

POST /api/claim
{ "address": "0x…", "token": "…", "pk": "<hex>", "sig": "<hex>" }

→ { "tx_hash": "0x…", "amount_wei": "…" }

Reference grinder

The faucet repo ships a multi-core CLI grinder:

git clone <this repo> frost-faucet && cd frost-faucet
uv run grinder.py 0xYOURADDRESS --faucet this-site

Tokens are single-use and expire at expires_at (the TTL scales with difficulty: at least 5 minutes, 6× the expected browser-rate grind). Difficulty is priced like a constant-product pool: it rises as the faucet's 24 h budget depletes (cost per drip doubles each time the remaining pool halves), plus +1 bit per successful claim per address (or /24, /56 subnet) in 24 h — repeat claims never fail, they just cost more. See how it works, /llms.txt, and /api/status.