Proof Layer

Pays the work. Signs it. Anchors it.

The fifth layer. Agent-to-agent verification that makes every Earth Agent's output portable, payable, and verifiable by anyone · without trusting our database.

Pay

Pays the work

Each upstream call settles through x402 against the customer wallet, capped at the quoted spend. Work that costs money gets paid for, per call.

Sign

Signs it

Every fact an agent emits is cryptographically signed · bound to its source, vintage, and confidence so it cannot be altered after the fact.

Anchor

Anchors it

The signature is anchored on Solana mainnet, giving any party a permanent, independent reference to verify against.

How a fact gets proven

Earth Agent emits

typed evidence

→

Anymal certifies

wraps + checks

→

x402 pays

per call

→

Signed

bound to provenance

→

Anchored

Solana mainnet

ATTESTEDexample envelope · preview

{
  "fact": "soil_organic_carbon=2.74",
  "agent": "soil",
  "source": "USDA SSURGO",
  "vintage": "2024-09-01",
  "confidence": 0.82,
  "chain": "solana",
  "slot": 284910337,
  "sig": "5Jx…q9F"
}

Verifiable without trust

A lender, a regulator, or a buyer re-checks any attested fact against the on-chain anchor independently. Source, vintage, and confidence travel with the payload. No claim without provenance.