{"uid":"cap_CohhXXj8xO_y-s1htbmZq","slug":"arakel-machine-evidence-network-prove-not-observed-d7cfe6df","name":"ARAKEL Machine Evidence Network – Prove Not Observed","description":"Machine-verifiable official-source evidence with free preflight and x402 USDC payments on Base.","url":"https://proof.arakelproof.space/v1/machine/prove-not-observed","method":"GET","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"result":"OBSERVED|NOT_OBSERVED|INCONCLUSIVE","schema":"arakel.machine-evidence.v2","source":{"id":"ofac"},"signature":{"alg":"Ed25519"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_jJuRJAp5sLxIqWftl1dVL","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a cryptographically signed machine-readable proof that a given entity was NOT_OBSERVED on official sanctions/watchlist sources (e.g. OFAC), with OBSERVED/INCONCLUSIVE alternatives.","exampleAgentPrompt":"Can you get a cryptographically signed NOT_OBSERVED proof from ARAKEL for counterparty 'Acme Trading Ltd' against the OFAC sanctions list so I have machine-readable compliance evidence before I send payment?","exampleUseCases":[{"title":"Pre-payment sanctions clearance check","prompt":"Before I wire funds to 'Meridian Exports LLC', get me a signed ARAKEL proof that they're not observed on the OFAC list — I need the machine-evidence result and signature for our compliance records."},{"title":"Automated onboarding KYC attestation","prompt":"We're onboarding a new vendor called 'BrightPath Solutions' — can you run them through ARAKEL and get a NOT_OBSERVED proof from OFAC so we have a signed attestation ready for our audit trail?"},{"title":"Counterparty dossier for due diligence","prompt":"Pull an ARAKEL machine evidence check on 'Vladislav Torenko' against official watchlist sources and give me the signed result showing whether they're observed, not observed, or inconclusive."}],"resultDescription":"A JSON object containing: a result field with OBSERVED, NOT_OBSERVED, or INCONCLUSIVE; the schema identifier (arakel.machine-evidence.v2); the source that was queried (e.g. id: 'ofac'); and a cryptographic signature block using Ed25519 algorithm — providing a tamper-evident, machine-readable compliance proof.","failureModes":["Entity identifier not found or ambiguous — may return INCONCLUSIVE","Source list unavailable or temporarily offline — endpoint may return error or INCONCLUSIVE","Invalid or missing entity parameter — HTTP 400 bad request","Payment not settled — HTTP 402 payment required (x402 protocol)","Rate limiting or quota exceeded — HTTP 429","Signature verification failure on response — indicates data integrity issue"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically signed, machine-readable proof that a specific entity is NOT on a sanctioned or watched list — particularly for automated compliance workflows, audit trails, or agent-to-agent due diligence where human-readable reports are insufficient. Prefer it over manual screening tools when you need Ed25519-attested evidence compatible with automated verification pipelines and when OFAC or similar official-source coverage is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:35:31.499Z","isFirstParty":false}