Fairseal Trust Infrastructure

Endpoints (6 live)

• GET /v1/rng/latest — Verifiable random numbers with cryptographic epoch references. Wesolowski 2048-bit VDF epoch chain with on-chain MerkleAnchor reference. For unbiased randomness: POST /v1/rng/commit (free), then GET the reveal_url returned in the response. Do not construct reveal paths yourself. (0.005 USDC on Base)
• POST /v1/pii/detect — Regex-based PII scan: emails, US/Canada (NANP) phone numbers, dash-formatted national IDs (partial coverage; alphanumeric IDs such as Taiwan format are not matched), loose passport patterns, 64-hex crypto private keys (may also flag SHA-256 hashes), credit cards, US SSNs, IPv4 addresses. Always returns sanitized text with PII redacted. Max 50,000 chars. Expect false positives and missed matches. (0.001 USDC on Base)
• POST /v1/veo/verify — Verify AI agent outputs against a VEO-2 schema. Checks structural validity, SHA-256 hash integrity (if content hash is present), and optional cryptographic signature on the output (if proof.provider_signature is present). Returns a verdict with per-check details. (0.002 USDC on Base)
• POST /v1/notarize — Anchor an AI agent decision or audit record to Base mainnet. Submit {schema, payload_hash (SHA-256 hex, 64 chars), metadata}; service queues into a Merkle batch and returns a receipt with pending_anchor status immediately. Full Merkle proof and on-chain anchor_tx available via free GET /v1/notarize/:receipt_id after batch anchors (within batch_threshold receipts or 120s). Include Idempotency-Key header to prevent double-charges on retry. (0.02 USDC on Base)
• POST /v1/rng/latest — Verifiable random numbers with cryptographic epoch references. Wesolowski 2048-bit VDF epoch chain with on-chain MerkleAnchor reference. For unbiased randomness: POST /v1/rng/commit (free), then GET the reveal_url returned in the response. Do not construct reveal paths yourself. (0.01 USDC on Base)
• POST /v2/anchor — Anchor a 32-byte commitment hash into a Merkle batch on Base mainnet. Charged $0.001 per submission (batch-settled); some listings show $0.01 as a per-item reference price. Returns anchor_id; poll status for merkle proof + tx hash receipt. (0.001 USDC on Base)