Documentation exported from Bitcoin Core 0.16.3

getbestblockhash (0.16.3 RPC)

blockchain

control

generating

mining

network

rawtransactions

util

wallet

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/