(xor (seq (seq (call relay ("op" "identity") []) (call node_1 (service "get_block") [api_key block_num] result) ) (seq (call relay ("op" "identity") []) (call %init_peer_id% (returnService "run") [result]) ) ) (seq (call relay ("op" "identity") []) (call %init_peer_id% (returnService "run") ["XOR FAILED" %last_error%]) ) )