GroundTruth

GroundTruth gives autonomous agents eyes in the physical world. A buyer defines an objective proof specification; GroundTruth dispatches a local operator, collects fresh photo or form evidence, applies freshness and integrity checks, and returns a machine-readable verdict with an auditable onchain receipt.

Digital APIs describe what should be true. GroundTruth verifies what is true now—on-shelf inventory, displayed prices, deliveries, asset condition, and site progress—before capital moves.

Arbitrum implementation: canonical USDC payment option on Arbitrum One; EvidenceReceiptRegistry deployed on Arbitrum Sepolia; hash-only proof-specification, evidence, and verdict receipts; HTTP, MCP, and A2A interfaces; and a $0.01 judge integration path.

Robinhood + USDG: GroundTruthUSDGTaskEscrow and a receipt registry are deployed on Robinhood Chain Testnet using official Paxos test USDG. A 1.000000 test USDG task was funded, receipted, and settled end to end.

The commercial wedge is retail execution: brands and commerce agents verify on-shelf availability, price, placement, and promotions across locations, then expand into recurring monitoring.

Built during Open House: Arbitrum One USDC x402 payment support; EvidenceReceiptRegistry deployed on Arbitrum Sepolia with a verifiable demo receipt; deterministic receipt hashing and tests; Robinhood Chain Testnet USDG escrow and receipt contracts; a 1 test USDG task funded and settled end to end; live /arbitrum, /robinhood, /judge and /receipts pages; a production judge console validating HTTP, MCP, A2A, payment challenge and both onchain proofs; and an under-two-minute narrated product demo.

Bootstrapped by a solo founder. Seeking design partners and milestone-based support to productionize the Arbitrum payment and receipt path and validate recurring retail, DePIN, logistics, and RWA verification workflows.