This message is from the machine
Any later announcement uses the same check. If the machine says something new, it signs that new message. If someone else repeats the words, they do not have the machine's signature.
How a signature is made โEach item is a message the ed25519 machine signs for itself. The deployment of the memecoin is the one that put the coin in the world.
The machine signed the deployment message for a memecoin. That signature is the machine saying this deployment is its own. A copy of the sentence without the signature is just a copy.
Any later announcement uses the same check. If the machine says something new, it signs that new message. If someone else repeats the words, they do not have the machine's signature.
How a signature is made โA signed message has the text, the 64-byte Ed25519 signature, and the machine's 32-byte public key. You verify those three together. The secret key is not part of the published message.
Verification notes โ