--this-is=an-option some-argument --this-is-not-an-option
sys.stdout.write(u"\u001b[1000D")
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The User and Issuer now run the blind signing protocol described above — here the User sets its message to SN and the employs its signing key SK. At the end of this process the user will hold a valid signature by the issuer on the message SN. The pair (SN, signature) now form the credential.