All projects matching “proofs”

Verified inference (Prova). OpenAI-compatible chat completions run inside a TEE (NVIDIA + Intel), hardware-attested, and anchored on Solana — every response returns an on-chain proof + Solscan link. Select a model via the body `model` field; price varies by tier (standard/premium/flagship).

Order a full purchase test of any online store by an AI shopping agent: access, cookies, search, product page, cart, checkout, plus shipping, returns and guest-checkout facts with proof, UCP and machine readability. Same method as Neoavis public tests, private result with screenshots and a summary, score out of 100. Returns an order id and a result URL to poll; result usually within the hour.

Compare an agent's advertised contract with its live x402 challenge and return deterministic proof.

Get tweet details with signed proof

Timestamp SHA-256 hashes in Bitcoin with OpenTimestamps: returns a standard .ots proof per hash (pending, complete within hours), verifiable without us

DJZS adversarial logic audit of a prediction-market trade intent. Deterministic verdict (PASS/WAIT/FAIL) with risk score, defect flags, verdict_hash, and on-chain Proof-of-Logic receipt. Out-of-scope requests are refused WITHOUT CHARGE. Audit, not advice.

Create a signed proof for a wallet that anyone can verify offline.

Pay $0.01 USDC to create an immutable timestamped statement. The server assigns recorded_at in UTC. Statements are public, permanent, and cannot be edited. Max body size: 10 KB. Network: Base Mainnet. Each request records one statement and returns public proof URLs.

x402 market intelligence with current catalog-attributed USDC flow, address-level demand signals and separately labeled value-matched history. The headline covers Base only (market.universeChains); the multi-chain picture ships alongside it as ecosystem, split into an RPC-proven floor and an indexed upper bound that are not additive (notASum). Attribution is not exclusive protocol-intent proof.

A deterministic Base chain identity and official USDC contract-presence check. No request body. Not a token-risk report, transaction simulation, or payment proof.

Print and mail physical US letters (PDF, HTML, Markdown, DOCX, or image) and postcards via USPS, paid in USDC — with certified/registered proof options and standalone address verification at POST /v1/verify. Integration flow: POST /v1/documents to upload, POST /v1/quotes to lock a fixed USDC price for a recipient, then pay the returned per-quote x402 URL to create and mail the piece. Price is fixe

OSCAL evidence bundle for one obligation: EU AI Act Article 50/53, DORA or EU-CRA. Returns selected card objects with signature fields, any retained inclusion proofs, an OSCAL wrapper and assembly manifest. Does not verify input-card signatures. Reports manifest signing status and any unsigned reason. States: ASSEMBLED or ASSEMBLED-EMPTY; zero selected cards stays zero. Supported-card verification

Settlement-backed machine evidence for autonomous agents. Returns a signed-payment transaction reference and machine-readable proof after exact USDC settlement.

Post a message to the board — a public, permanent, paid message wall. Every message costs $0.001 USDC, making economic proof-of-intent the spam filter. Messages are public, timestamped, and attributed to the paying wallet's transaction hash.

EU VAT number validation via official VIES (all 27 EU states + XI): valid/invalid, name, address, consultation (proof) number

Solana token risk screen with signed proof. Returns score 0-100, risk level, ALLOW/CHALLENGE/DENY gate decision, structured warnings, and an ed25519-signed receipt binding the payment settlement and result hash - independently verifiable at /verify without trusting us.

Repair a failing Solana transaction: exact cause, rebuilt unsigned transaction, simulation proof, verification.

Browser verification and page state proof: preserve what a public webpage says now with timestamped artifact hashes