private String computeIssueProgram(String rootKey, int keyIndex) throws NoSuchAlgorithmException, SignatureException, InvalidKeyException {\r
byte[] derivePrivateKey = DerivePrivateKey.derivePrivateKey(rootKey, keyIndex);\r
byte[] deriveXpub = DeriveXpub.deriveXpub(derivePrivateKey);\r
+\r
String issueProgram = "ae20" + Hex.toHexString(deriveXpub).substring(0, 64) + "5151ad";\r
return issueProgram;\r
}\r