{"message":"getblockhash index\n\nReturns hash of block in best-block-chain at index provided.\n\nArguments:\n1. index         (numeric, required) The block index\n\nResult:\n\"hash\"         (string) The block hash\n\nExamples:\n> unigrid-cli getblockhash 1000\n> curl --user myusername --data-binary '{\"jsonrpc\": \"1.0\", \"id\":\"curltest\", \"method\": \"getblockhash\", \"params\": [1000] }' -H 'content-type: text/plain;' http://127.0.0.1:51993/\n","code":-1,"name":"RpcError"}