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PennyRail Nano Chain Block Number – Proven Block Number Lookup
x402
PennyRail Nano Chain Block Number – Proven Block Number Lookup is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Returns the current block number and the latest proven block number on a nano chain via a paid settlement endpoint.
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing the current block number on the nano chain and the latest proven block number, allowing callers to determine on-chain finality and settlement state.
Example use cases
Settlement state verification
“Can you check what the current block number and the proven block number are on the nano chain so I can confirm my settlement is finalized?”
Block height monitoring for dApp
“I need to know the latest proven block number on the nano chain to make sure my dApp is in sync — can you fetch that for me?”
Audit trail block anchoring
“Fetch the current block number and proven block number from the nano chain so I can anchor my audit record to the right on-chain state.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/nano/chain.block-number--proven-block-numberWhen to prefer
Use this endpoint when you need a lightweight, pay-per-call lookup of the current and proven block numbers on a nano chain for settlement, finality checking, or synchronization purposes — particularly in automated agent workflows that require on-chain state without running a full node.
Side effects
- Invalid or missing input object returns a 400 error
- Payment not included or insufficient USDC triggers a 402 Payment Required response
- Chain node unavailable or unreachable returns a 503 or timeout
- Malformed response if the underlying chain RPC is degraded
- Rate limiting if too many requests are sent in quick succession
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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