{"uid":"cap_FgWxr5BTLHL2Wv13qRF-J","slug":"taifoon-settlement-proof-24895efe","name":"Taifoon Settlement Proof","description":"Settlement Proof — chain_id=8453/tx_hash=0x381b311efe17fdce7e3e26d211253197bfb715195152b016b9576b6528989684","url":"https://www.taifoon.io/api/skills/settlement-proof?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"tx_hash":{"type":"string","pattern":"^0x[0-9a-fA-F]{64}$","description":"the transaction whose block is proven"},"chain_id":{"type":"integer","description":"chain id (8453 Base, 5042 Arc, 1 Ethereum, …)"},"block_number":{"type":"integer","description":"or: the block to prove"}}},"responseSchema":{"type":"json","example":{"skill":"settlement-proof","proof_blob":{"finality":{"finalityType":12},"superroot":{"batchId":1790440016,"chainCount":61,"superrootHash":"0x…"},"chainHeaders":[{"chainId":8453,"blockHash":"0x…","blockNumber":51741672}]},"receipt_id":"f0e1d2c3b4a5968778695a4b3c2d1e0f","settlement":"0x…","unconfirmed":false,"paid_network":"eip155:8453","receipt_subject":"chain_id=8453/tx_hash=0x8af83d2234c55d8210c6789a39fb4278014db6f540812efd633e8befc1369f74"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.5","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":"$0.5/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_5rzRHiw71j1OK1RwlzJwV","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.5","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates a cryptographic settlement proof for a blockchain transaction or block, anchored under the SuperRoot across multiple chains","exampleAgentPrompt":"Can you get me a settlement proof for transaction 0x381b311efe17fdce7e3e26d211253197bfb715195152b016b9576b6528989684 on Base chain (chain ID 8453)?","exampleUseCases":[{"title":"Prove payment finality on Base","prompt":"I just sent a payment on Base with tx hash 0x8af83d2234c55d8210c6789a39fb4278014db6f540812efd633e8befc1369f74 — can you get me a settlement proof so I can show the recipient it's finalized?"},{"title":"Verify block inclusion under SuperRoot","prompt":"Can you prove that block 51741672 on chain 8453 is settled under the SuperRoot and give me the proof blob?"},{"title":"Audit trail for cross-chain transaction","prompt":"I need a cryptographic settlement proof for tx hash 0xabc123...def456 on Ethereum mainnet (chain ID 1) to include in our compliance audit — can you get that from Taifoon?"}],"resultDescription":"Returns a JSON proof blob containing the finality type, superroot metadata (batchId, chainCount, superrootHash), chain header details (chainId, blockHash, blockNumber), a receipt ID, settlement hash, unconfirmed flag, paid network identifier, and a receipt subject string identifying the proven transaction or block.","failureModes":["Invalid or malformed tx_hash (must be 0x-prefixed 64 hex chars) returns a validation error","Unsupported chain_id returns an error indicating the chain is not indexed","Transaction not yet finalized may return unconfirmed: true or an error","Neither tx_hash nor block_number provided may cause a missing-parameter error","Payment failure (insufficient USDC) blocks the request before processing"],"whenToPreferThis":"Use this endpoint when you need a cryptographic, SuperRoot-anchored proof of transaction or block finality on a supported EVM chain (especially Base chain 8453). It is ideal for compliance audits, escrow release triggers, cross-chain verification, and any workflow where you must demonstrate to a third party that a specific on-chain event is settled. Prefer it over block explorers when a machine-verifiable proof blob is required rather than a human-readable status page.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T12:35:46.592Z","isFirstParty":false,"canonicalSlug":"taifoon-settlement-proof-24895efe"}