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Bitcoin Transaction Lookup by TXID
x402
Bitcoin Transaction Lookup by TXID is a paid API for AI agents from chain.openverbs.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-30).
Looks up a Bitcoin transaction by its TXID and returns confirmation status, block height and time, fee, fee rate, size, weight, input/output counts, and total output value.
Price / call$0.006
Success—
StatusUnknown
Output
Returns confirmation status (confirmed or unconfirmed), block height and timestamp of inclusion, total fee in satoshis, effective fee rate in sat/vB, raw and virtual transaction size in bytes, weight units, number of inputs and outputs, and total output value expressed in both satoshis and BTC.
Example use cases
Verify payment received before shipping
“A customer claims they paid us in Bitcoin — the txid is f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16. Can you confirm it's been mined, how many sats were in the output, and what block it's in?”
Audit transaction fee for cost accounting
“I need to know exactly how much fee (in sats) and at what sat/vB rate our withdrawal transaction a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d paid on-chain.”
Debug stuck or slow Bitcoin transaction
“Transaction 6f7cf9580f1c2dfb3c4d5d043cdbb128c640e3f20e55131ac2b26b6de83a0e7 seems slow — can you pull up its virtual size, weight, and effective fee rate so I can figure out if it's likely to get stuck in the mempool?”
Technical details
Endpoint
POSThttps://chain.openverbs.com/v1/btc-tx?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative on-chain Bitcoin transaction data — confirmation status, exact fee paid, fee rate, size metrics, and output values — given a specific txid. Prefer this over block explorer web scraping or general-purpose blockchain APIs when you need structured, machine-readable ground truth for payment verification or auditing in an automated agent workflow.
Side effects
- Invalid txid (not 64 hex characters) returns a validation error
- Transaction not found on-chain or in mempool returns a not-found error
- Network or upstream node unavailability may cause timeout or 5xx error
- Unconfirmed mempool transactions may return partial data (no block height/time)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| txid | string | Transaction id: 64-character hex string. |
Tags
x402
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