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getblockheader

If verbose is false, returns a string that is serialized, hex-encoded data for blockheader ‘hash’.
If verbose is true, returns an Object with information about blockheader ‘hash’.

Argument #1 - blockhash

Type: string, required
The block hash

Argument #2 - verbose

Type: boolean, optional, default=true
true for a json object, false for the hex-encoded data

Result (for verbose = true)

{ (json object)
"hash" : "hex", (string) the block hash (same as provided)
"confirmations" : n, (numeric) The number of confirmations, or -1 if the block is not on the main chain
"height" : n, (numeric) The block height or index
"version" : n, (numeric) The block version
"versionHex" : "hex", (string) The block version formatted in hexadecimal
"merkleroot" : "hex", (string) The merkle root
"time" : xxx, (numeric) The block time expressed in UNIX epoch time
"mediantime" : xxx, (numeric) The median block time expressed in UNIX epoch time
"nonce" : n, (numeric) The nonce
"bits" : "hex", (string) The bits
"difficulty" : n, (numeric) The difficulty
"chainwork" : "hex", (string) Expected number of hashes required to produce the current chain
"nTx" : n, (numeric) The number of transactions in the block
"previousblockhash" : "hex", (string) The hash of the previous block
"nextblockhash" : "hex" (string) The hash of the next block
}

Result (for verbose=false)

Name
Type
Description
hex
string
A string that is serialized, hex-encoded data for block ‘hash’
Request
Curl
Postman
curl --location --request POST 'https://btc.api.watchdata.io/node/jsonrpc?api_key=your_api_key' \
--header 'x-api-key: your_api_key' \
--header 'Content-Type: application/json' \
--data-raw '{
"jsonrpc": "1.0",
"id": "curltest",
"method": "getblockheader",
"params": [
"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09"
]
}'
URL: https://btc.api.watchdata.io/node/jsonrpc?api_key=your_api_key
RequestType: POST
Body:
{
"jsonrpc": "1.0",
"id": "curltest",
"method": "getblockheader",
"params": [
"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09"
]
}
Response
{
"hash": "00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09",
"confirmations": 735634,
"height": 1000,
"version": 1,
"versionHex": "00000001",
"merkleroot": "fe28050b93faea61fa88c4c630f0e1f0a1c24d0082dd0e10d369e13212128f33",
"time": 1232346882,
"mediantime": 1232344831,
"nonce": 2595206198,
"bits": "1d00ffff",
"difficulty": 1,
"chainwork": "000000000000000000000000000000000000000000000000000003e903e903e9",
"nTx": 1,
"previousblockhash": "0000000008e647742775a230787d66fdf92c46a48c896bfbc85cdc8acc67e87d",
"nextblockhash": "00000000a2887344f8db859e372e7e4bc26b23b9de340f725afbf2edb265b4c6"
}