getblockhash

POST

/{apiKey}

Returns the hash of the block at a given height (index) in the active Bitcoin blockchain.

Path Parameters

stringrequireddefaults to docs-demo

For higher throughput, create your own API key

Request

integerrequired

The height of the block to retrieve the hash for.

Responses

200

The hash of the block at the specified height.

A 64-character hex string representing the block hash.

POST/v2/{apiKey}

curl --request POST \  --url https://bitcoin-mainnet.g.alchemy.com/v2/docs-demo \  --header 'Content-Type: application/json' \  --data '{  "jsonrpc": "2.0",  "id": 1,  "method": "getblockhash",  "params": [    894470  ]}'

200Success

{  "jsonrpc": "2.0",  "id": 1,  "result": "00000000000000000000669ed57030eb18020ee7029c064f10505156be203d80"}

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