{"uid":"cap_Fw3i7dVYNvJ3fBNS7Ulol","slug":"taifoon-blockchain-block-proof-verifier-606ceb67","name":"Taifoon Blockchain Block Proof Verifier","description":"Verify a block under the SuperRoot — chain 8453 block 51741679","url":"https://www.taifoon.io/api/skills/proof-verify-v5?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"chain_id":{"type":"integer","description":"the chain (8453 Base, 5042 Arc, 1 Ethereum, …)"},"block_number":{"type":"integer","description":"the block to prove"}}},"responseSchema":{"type":"json","example":{"ok":true,"blob":{"finality":{},"superroot":{},"blockProof":{},"chainHeaders":[],"superrootProof":{}},"class":"proof.verify.v5","chainId":8453,"finality":{"type":12,"finalizedBlockHash":"0x0316464742b8edb13c6f267b79b01b71d68f306139d2a95cb6c76683e616a2fc","finalizedBlockNumber":51741679},"blockHash":"0x0316464742b8edb13c6f267b79b01b71d68f306139d2a95cb6c76683e616a2fc","receipt_id":"f0e1d2c3b4a5968778695a4b3c2d1e0f","blockNumber":51741679,"proofBlobUrl":"https://api.taifoon.dev/api/v5/proof/blob/8453/51741679","superrootHash":"0xec7ce0f9a6eba253561c7845e550e0756fc8f795f8ecdf34aa65621a743b10f1"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","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":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_pnplos0EVT-tdCEVbdAFQ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Cryptographically verifies a specific block under the SuperRoot for a given blockchain chain ID and block number","exampleAgentPrompt":"Can you verify block 52180190 on Base chain (chain ID 8453) using Taifoon's SuperRoot proof system?","exampleUseCases":[{"title":"Base chain block integrity check","prompt":"I need to verify that block 52180190 on Base (chain ID 8453) is valid under the SuperRoot — can you run a proof verification on it?"},{"title":"Ethereum mainnet block proof","prompt":"Can you prove and verify block 19000000 on Ethereum mainnet (chain ID 1) to confirm its integrity under the SuperRoot?"},{"title":"Arc chain block attestation","prompt":"Please verify block 1000000 on Arc chain (chain ID 5042) and confirm whether the proof checks out under the SuperRoot."}],"resultDescription":"Returns a cryptographic proof verification result indicating whether the specified block on the given chain is valid and attested under the SuperRoot, including block validity status and attestation details.","failureModes":["Invalid or non-existent block number for the specified chain — returns error indicating block not found","Unsupported chain_id — returns error for chains not covered by the SuperRoot","Block not yet finalized or too recent — proof may be unavailable","Payment failure or insufficient USDC — request rejected before processing","Network timeout or SuperRoot unavailability — service temporarily unreachable"],"whenToPreferThis":"Use this endpoint when you need cryptographic, SuperRoot-backed verification of a specific block on supported EVM chains (Base, Arc, Ethereum). Prefer this over generic RPC calls when you need a trustless proof rather than just block data, or when auditing block integrity in a trustless context.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T00:36:05.430Z","isFirstParty":false,"canonicalSlug":"taifoon-blockchain-block-proof-verifier-606ceb67"}