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chainquery getblockhash
x402
chainquery getblockhash is a paid API for AI agents from x402.chainquery.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Returns the block hash for a Bitcoin block at a given height using Bitcoin Core's getblockhash RPC, served from chainquery's independent full node via x402 pay-per-call.
Price / call$0.005
Success—
StatusUnknown
How this service works
chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Block hash at a given height from chainquery's independent full node. Bitcoin Core getblockhash.
Output
Returns the Bitcoin block hash (a 64-character hex string) corresponding to the requested block height, as returned by Bitcoin Core's getblockhash RPC method.
Example use cases
Example prompt
“What's the Bitcoin block hash at height 840000? Query chainquery's independent full node for me.”
Technical details
Endpoint
GEThttps://x402.chainquery.com/v1/rpc/getblockhashWhen to prefer
Use this endpoint when you need a trustworthy, independently-operated Bitcoin full node to resolve a block height to its canonical block hash — especially when you want pay-per-call access without signing up for an API key, or when you want to cross-check block hashes against a node not operated by a major provider.
Side effects
- Block height out of range (negative or above current chain tip) returns an RPC error
- Missing or malformed params query parameter returns a parse error
- Payment failure via x402 returns 402 Payment Required before the RPC call is executed
- Node temporarily unavailable returns a 5xx error
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"params": "[840000]"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"result": "0000000000000000000320283a032748cef8227873ff4872689bf23f1cda83a5"
}Tags
x402
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