The term skull and crossbones is identified in base64 scheme by the sequence c2t1bGwgYW5kIGNyb3NzYm9uZXM=, while the MD5 signature is equal to 8a72617dc0096a56a6b417a6840013a3. The ASCII encoding of skull and crossbones in hexadecimal notation is 736b756c6c20616e642063726f7373626f6e6573.