The term block anesthesia is identified in base64 scheme by the sequence YmxvY2sgYW5lc3RoZXNpYQ==, while the MD5 signature is equal to 6a7f1159fbe2f5b4a10f7f294f934e81. The ASCII encoding of block anesthesia in hexadecimal notation is 626c6f636b20616e6573746865736961.