Documentation exported from Bitcoin Core 0.18.0

getbestblockhash (0.18.0 RPC)

blockchain

control

generating

mining

network

rawtransactions

util

wallet

zmq

getbestblockhash

Returns the hash of the best (tip) block in the longest blockchain.

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/