{"uid":"cap_F0RndRSDla3eALo1QHyIo","slug":"entropy-rip-verifiable-randomness-81fc4c3b","name":"entropy.rip Verifiable Randomness","description":"Generate cryptographically secure verifiable randomness using Drand and local system entropy","url":"https://entropy.rip/api/entropy/verifiable","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"signature":"-----BEGIN PGP SIGNATURE...","timestamp":"2026-07-14T09:20:00Z","local_salt":"deadbeef...","randomness":"a1b2c3d4e5f6g7h8...","drand_round":4015682,"random_value":1234567890123456,"drand_randomness":"6b37a5..."}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_YBTsl5DrYDsPKn5oqtkza","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates cryptographically secure, verifiable random values using Drand beacon and local system entropy","exampleAgentPrompt":"Give me a cryptographically secure random value that I can verify was generated fairly using the Drand beacon and local entropy — I need proof it wasn't manipulated.","exampleUseCases":null,"resultDescription":"Returns a verifiable random value generated by combining Drand distributed randomness beacon output with local system entropy, including cryptographic proof or metadata that allows the caller to independently verify the randomness was not manipulated or predicted.","failureModes":["Drand beacon temporarily unavailable — randomness generation fails","Network timeout fetching Drand round","Payment not processed (x402 payment required, HTTP 402)","Service overload — rate limit exceeded","Invalid or malformed request parameters"],"whenToPreferThis":"Choose this endpoint when you need randomness that is not just unpredictable but independently verifiable — for example, lotteries, fair draws, game outcomes, or any use case where a third party must be able to audit that the result was not rigged. Prefer over simple PRNG or non-verifiable entropy when cryptographic auditability is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:39:34.527Z","isFirstParty":false}