Feature/uc 1395 introduce new hashed trackle msg pack version #20
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The documentation for the new UPP can be found here: https://github.com/ubirch/ubirch-protocol/blob/master/README_PAYLOAD.md#hashed-trackle-message-packet
It has kind of an anti pattern, as the signature is not created over the whole msgPack (version, id, chain, hint, payload, etc) but only over the hash that is contained in the payload. The reason is to remove the user data (temperatures etc.) in the original UPP and only send the hash and the correct signature to Niomon..