You cannot have the signature as part of the signed message. You can substitute a deterministic value (like all zeroes) where the signature goes, during the sig

You cannot have the signature as part of the signed message. You can substitute a deterministic value (like all zeroes) where the signature goes, during the signature calculation. You may be interested in Telegram’s documentation on reusable iOS and Android builds. https://core.telegram.org/reproducible-builds https://core.telegram.org/reproducible-builds