The term zero coupon security is identified in base64 scheme by the sequence emVybyBjb3Vwb24gc2VjdXJpdHk=, while the MD5 signature is equal to 3b6e1f60cf8e6a9e147e711c3d20b817. The ASCII encoding of zero coupon security in hexadecimal notation is 7a65726f20636f75706f6e207365637572697479.