{"uid":"cap_KRGwL8omH2oGxlwzX1aPh","slug":"web3-tools-transaction-hash-txid-signature-format-checker-bee7b105","name":"Web3 Tools – Transaction Hash / TXID / Signature Format Checker","description":"Recognise what a transaction id looks like (EVM hash, Bitcoin txid, Solana signature) from format alone, and flag typos.","url":"https://web3-tools.x402tookit.com/tx-hash-check?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["id"],"properties":{"id":{"type":"string","description":"A transaction hash, txid or signature"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"input":{"type":["null","string"]},"family":{"type":["null","string"]},"source":{"type":["null","string"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"disclaimer":{"type":["null","string"]},"normalised":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_vtr5iqmBWaUj7J0bpFRx2","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates whether a given string is a well-formed transaction identifier (EVM hash, Bitcoin txid, or Solana signature) and flags any formatting typos or errors.","exampleAgentPrompt":"Can you check whether this string is a valid transaction ID and tell me which blockchain it belongs to, or if there's a typo: 0x4e3a8f2d1b9c6e5f7a0d3c2b1a9e8f7d6c5b4a3e2d1c0b9a8f7e6d5c4b3a2e1d0?","exampleUseCases":[{"title":"Debug a pasted transaction link","prompt":"A user just pasted this into our support chat: '5WbcR7xKqP2mNvY8LdFhJtG3sBuEaZo4iXwCkRmV9nTpD6yH1eA0jQc' — can you tell me if that looks like a valid Solana signature or if they mangled it?"},{"title":"Validate txid before querying explorer","prompt":"Before I look this up on a block explorer, can you confirm that '1A2b3C4d5E6f7G8h9I0jKlMnOpQrStUvWx' is a properly formatted Bitcoin txid or if something looks off?"},{"title":"Identify chain from unknown hash","prompt":"I got this transaction reference from a payment processor but they didn't say which chain it's from: 0xabc123def456abc123def456abc123def456abc123def456abc123def456abc1 — can you figure out if it's an EVM hash and whether the format is correct?"}],"resultDescription":"Returns a verdict on whether the input is a valid transaction identifier, the detected blockchain family (EVM, Bitcoin, Solana), a normalised form of the hash, a plain-language summary, a list of reasons if invalid, and metadata such as whether the service was degraded and a disclaimer.","failureModes":["Input string is entirely unrecognisable (returns a non-matching verdict with reasons)","Ambiguous or truncated hash may not map cleanly to a family","Service degraded flag may be set if internal checks are partially unavailable","Missing required 'id' query parameter returns an error"],"whenToPreferThis":"Use this endpoint when you need to quickly classify and validate a raw transaction identifier string by format alone — without actually querying a blockchain node or explorer. Ideal for pre-flight checks before submitting to an explorer API, validating user-supplied txids in forms or support tickets, or detecting copy-paste typos across EVM, Bitcoin, and Solana transaction formats in a single call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:19:25.319Z","isFirstParty":false,"canonicalSlug":"web3-tools-transaction-hash-txid-signature-format-checker-bee7b105"}