RWA condition checks
A token or workflow can represent an asset but cannot observe its present condition.
Fresh, checklist-bound evidence before underwriting, release, or escalation.
Arbitrum One · Agentic finance · Physical-state oracle
Onchain agents can move money.
GroundTruth lets them check reality first.
GroundTruth converts an agent request into a funded physical-world mission, screens the returned evidence, and produces a pollable receipt. Calls can be paid with canonical USDC on Arbitrum One through HTTP 402.
Live MVP · Arbitrum One payment option · Arbitrum Sepolia receipt registry · asynchronous fulfillment
The missing primitive
Smart contracts verify signatures. They cannot see a shelf, building, device, or parcel.
GroundTruth is not another web-search oracle. It is an execution layer for questions whose answer exists only in the present physical world.
DePIN deployment proof
Coordinates and device telemetry do not independently prove correct physical installation.
Location-bound capture, required angles, structured observations, and a review trail.
Agentic commerce
An autonomous buyer can query digital inventory but not verify the shelf, price, or display now.
A paid asynchronous field check returned through API, MCP, or A2A.
One request, auditable lifecycle
From USDC authorization to evidence receipt.
01
Request
An agent submits one objective physical-state question and an evidence specification.
02
Pay
The endpoint returns HTTP 402; the agent authorizes canonical USDC on Arbitrum One.
03
Dispatch
GroundTruth exposes only funded work to an eligible operator in a confirmed coverage zone.
04
Verify
Freshness, integrity, location, and evidence-to-brief checks produce an explainable verdict.
05
Consume
The agent polls a machine-readable receipt and can preserve its evidence trail downstream.
Arbitrum payment contractx402 v2
POST /api/v1/human-do
Content-Type: application/json
{
"intent": "Verify the deployed unit
matches asset record RWA-184",
"service_tier": "photo_visit",
"proof_spec": {
"type": "photo",
"instructions": "Capture serial label,
installation context, and condition",
"minPhotos": 3
}
}
402 → eip155:42161 · USDC
200 → task_id + poll_urlBuilt, not hand-waved
Interfaces a judge or agent can inspect now.
Arbitrum Sepolia · 421614EvidenceReceiptRegistry0xaf712732bd2c8ef589bb9fff5421ed428e4207e1Protocol demo · not customer activityVerifiable receipt recorded on Arbitrum SepoliaTask 00000000-0000-4000-8000-000000042161Current boundary: the software and payment rails are live, while physical fulfillment remains coverage-gated and launches city by city. GroundTruth does not claim global operator coverage or recurring revenue. The initial operating wedge is compact Hyderabad retail verification.
Open House build objective
Make physical evidence composable on Arbitrum.
The receipt primitive is live on Arbitrum Sepolia: task specification hash, evidence digest, verification verdict, timestamp, and issuer—without putting private photos or personal data onchain. The next milestone is a security-reviewed Arbitrum One deployment backed by an external paid pilot.