Just in case you have not heard of Cardano-Signer before, here is a short summary what you can do with it:   What can cardano-signer sign/generate? Sign any hexdata, textdata or binaryfile with a provided normal or extended secret key. The key can be provided in hex, bech or file format. The signing output is a signature in hex- or json-format, also the public key of the provided secret key for verification. With the enabled --jcli flag the generated signature and public...