{"uid":"cap_zD0GQH0KWo2Y_CP66266N","slug":"blake2b-512-hash-digest-17dffdc7","name":"BLAKE2b-512 Hash Digest","description":"BLAKE2b-512 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network","url":"https://twin.unykorn.org/hash-blake2b512?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"params":{"type":"object","properties":{"hex":{"type":"string","pattern":"^0x[0-9a-fA-F]*$"},"text":{"type":"string","maxLength":49152}}}}},"responseSchema":{"type":"json","example":{"ok":true,"type":"hash-blake2b512","receipt":{"tx_hash":"0x<64hex>","amount_usd":0.001,"receipt_id":"g402-<16hex>"},"generated_at":"<iso8601>"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_hXz67kY4cF7Gtv840ndcF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the BLAKE2b-512 cryptographic hash digest of a given text string or raw hex-encoded bytes","exampleAgentPrompt":"Can you compute the BLAKE2b-512 hash of the text 'Hello, world!'?","exampleUseCases":[{"title":"Data integrity fingerprinting","prompt":"Hash the text 'version=1.2.3;author=alice;timestamp=2024-01-15' using BLAKE2b-512 so I can use it as a content fingerprint for change detection."},{"title":"Raw bytes cryptographic digest","prompt":"Give me the BLAKE2b-512 digest of the hex bytes 0xdeadbeefcafebabe01020304 — I need the hash to verify a firmware payload."},{"title":"Password or secret derivation check","prompt":"Compute the BLAKE2b-512 hash of the string 'my-secret-passphrase-2024' so I can compare it against a stored hash in my database."}],"resultDescription":"Returns a JSON object with a boolean 'ok' field, the hash type identifier ('hash-blake2b512'), the BLAKE2b-512 digest of the input, a payment receipt containing a transaction hash, USD amount charged, and a unique receipt ID, plus an ISO 8601 timestamp of when the digest was generated.","failureModes":["Input text exceeds 49152 character limit — request rejected","Hex input does not match pattern ^0x[0-9a-fA-F]*$ — validation error","Neither 'text' nor 'hex' param provided — ambiguous or empty input","Payment processing failure — x402 transaction not confirmed","Network timeout or provider unavailability returns non-200 response"],"whenToPreferThis":"Choose this endpoint when you need a BLAKE2b-512 (512-bit) digest specifically, as opposed to SHA-256 or shorter BLAKE variants. It is ideal for blockchain-adjacent workflows, data integrity verification, or any scenario requiring a high-security, fast, collision-resistant hash without a secret key. Prefer this over SHA-3 or MD5 when speed and security are both priorities. Use the hex input parameter when your data is already binary/byte-encoded rather than UTF-8 text.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T18:55:43.787Z","isFirstParty":false,"canonicalSlug":"blake2b-512-hash-digest-17dffdc7"}