Documentation exported from Bitcoin Core 0.21.0

getbestblockhash (0.21.0 RPC)

blockchain

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generating

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util

wallet

zmq

getbestblockhash

Returns the hash of the best (tip) block in the most-work fully-validated chain.

Result:
"hex"    (string) the block hash, hex-encoded

Examples:
> bitcoin-cli getbestblockhash 
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "getbestblockhash", "params": []}' -H 'content-type: text/plain;' http://127.0.0.1:8332/