Test mode. Use card 4242 4242 4242 4242, any future date, any 3 digits.
The coin is test coin on a test chain. No real card is charged and nothing is shipped.
A — Pay right here
The buyer never leaves the page.
Crossmint checks the buyer's ID.
They type card details.
Coin goes straight to the merchant.
B — Send a link
The buyer pays whenever they like. The link keeps working.