C2PA verdict attestation Tier A. POST raw asset bytes (max 25MB). Rubric runs Google Credentio validation in-sandbox, anchors the verdict to Hedera with ML-DSA-65 post-quantum signature. Durable proof asset X validated against C2PA Trust List Y at time T. Operated by TenPrint.

C2PA verdict attestation Tier B. Client runs Credentio locally, submits verdict JSON + asset hash + client signature. Rubric countersigns and anchors receipt. Attests the assertion was made, not verdict truth. Operated by TenPrint.

Unforgeable operating history for any AI agent attesting through TenPrint: record count, first-seen date, continuity days, and recent activity, computed from HCS-anchored attestations that cannot be backdated.

Unforgeable operating history for any AI agent attesting through TenPrint: record count, first-seen date, continuity days, and recent activity, computed from HCS-anchored attestations that cannot be backdated.

Attested LLM inference: gpt-4o-mini chat completion plus a post-quantum signed, Hedera-anchored attestation binding the prompt hash, response hash, exact model version, and timestamp. Evidence of which model said what, when — for agents whose decisions may be questioned later.

Attested sanctions and export-control screening: OFAC SDN and Consolidated (primary and alternate spellings), UN Security Council, UK OFSI, EU and BIS Denied Persons. Fuzzy token matching (screen-matc

Attested verification-event custody: seal the fact that an identity/liveness/KYC check ran, its method, provider, and result — without the subject's identity ever reaching Rubric. Caller submits an opaque subjectRef (hash it client-side); the sealed record binds event to outcome, ML-DSA-65 signed and Hedera-anchored. Prove a verification happened and what it said, forever, to anyone.

Attested work record for mixed human/robot/agent crews: seal who (or what) did which action, the outcome, and any deviation from plan — the operational log entry that survives an incident investigation or insurance dispute. ML-DSA-65 signed, Hedera-anchored, independently verifiable by any party.

Attested pre-transaction counterparty check: OFAC SDN digital-currency list match plus on-chain profile for any Base address, returned as a signed, Hedera-anchored verdict you can cite as evidence of diligence.

Attested policy evaluation: submit a proposed agent action, its context, and the policy it must satisfy. Returns a verdict, reasoning and the clauses applied, binding hashes of all three inputs into an ML-DSA-65 signed, Hedera-anchored record.

Verify a Rubric decision attestation (DAR/0.1): Merkle inclusion proof, HCS anchor ref, service signature status, drift flag. Pass agentId instead for a chain-check continuity report. Not found means no charge. $0.10 either mode.

All thirteen attested Hedera network facts in one call at GET /v1/x402/hedera-facts/all, each carrying its own attestation ID. A fact whose upstream cannot answer comes back marked unavailable rather than failing the set.

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

Rubric Market Intel subscription: $10 USDC buys 30 days of intel-report pulls (60-serve cap) bound to the paying wallet. Subscribe once, then call intel-report with a normal x402 payment header from the same wallet - the payment is verified but never settled while the sub is active. No token, no account.

Structured feed of regulatory changes affecting AI systems: jurisdiction, instrument, change type, effective dates, comment deadlines. Curated snapshot, refreshed monthly. Every item carries its ingest date and a primary source link.

Signed monthly x402 spend statement for one agent: totals, per-payment lines, Merkle root. The statement is itself an ML-DSA-65 attestation anchored to Hedera mainnet HCS. Render, verify, and print the response free at https://rubric-protocol.com/statement.html

One post-quantum-signed AI decision attestation, anchored to Hedera mainnet HCS.

Independent audit of a Rubric attestation: signature validity, HCS sequence, and direct Hedera mirror-node confirmation. Returns a signed verdict carrying its own attestation ID — a verification you can cite as evidence.

Attested x402 payment history for any buyer wallet: settlement count, first-seen, last-seen, total spent, services used, distinct sellers observed - computed from an append-only settlement ledger and anchored on Hedera. Counterparty intelligence that is evidence, not opinion: unlike behavioral scores, these records cannot be revised.