Before the order
The public cart is provisional. After sign-in, Silurian collects the billing identity, calculates supported tax and validates each product again before an immutable order is created.
- Domain availability is checked again without registering the domain.
- Current Silurian catalogue prices replace expired cart quotes.
- Unsupported tax or product combinations stop for review.
Billing and tax evidence
The quote is bound to the current cart, billing address and tax profile. Changing a product, address, customer type or VAT evidence requires a new calculation. Special territories or evidence that cannot be resolved safely stop for review instead of receiving an assumed rate.
Payment authority
Card details go directly to Stripe. A browser success screen is not payment authority: Silurian waits for Stripe's signed webhook and verifies its order, client, amount and currency before moving the order to a paid state.
Currency precision
Tax evidence is retained at higher precision, while an EUR card charge and legal document total use cents. The amount sent to Stripe is the same two-decimal gross shown for payment; any source rounding difference remains explicit in the invoice projection.
Mobile verification
A positive-value purchase may postpone mobile verification until payment to reduce interruption. The paid order cannot be invoiced or provisioned until the buyer completes the normal SMS verification. Free orders require verification before the order is created.
Expired orders
An unpaid order is reserved for 15 minutes. If no Stripe payment attempt exists, it can be rebuilt as a new cart with current prices. An order with a payment attempt remains locked until that payment is reconciled.