The first step to create a cashu token is to choose a random secret (x).
The secret has to be impossible to guess or brute-force.
Click on 'generate' to create a random secret (x) and 'choose this secret' once you're ready to proceed.
Mint publicKey (K): 03ef066985c4bbd7d224f6a997e52d95f4ba653ccb15cc089c6e77991738c69d58