At launch, creation of new on-chain accounts is on an invitation-only basis. You will be requested to enter a valid invite code before creating a new on-chain account.
Now setup your own self custodial wallet (on-chain account).
Cantex will show you a 24 word passphrase which you must confirm.
It is important that you store this safely and securely (and ideally offline).
If you lose your passphrase you may lose access to your funds.
Cantex does NOT store this passphrase on your behalf