PREORDER EVIDENCE KIT · FREE PUBLIC ALPHA
Freeze the promise before the release date moves.
A preorder can be charged now or later, fulfilled after a changing availability date, cancelled, or refunded. Preserve the exact price, delivery range, returns, and cancellation promise accepted at checkout.
01 · PAYMENTPrice and charge timing
Record the final total and whether any important payment condition was part of the offer.
02 · AVAILABILITYRelease or ship window
Use the delivery range and detail field for the availability or expected dispatch promise.
03 · CANCELLATIONExit before release
Record how long cancellation remains available and any condition that changes it.
04 · RETURNSWhat starts the clock
State the return window, whether it starts at purchase or delivery, and who pays return shipping.
ONE-CLICK PREORDER CAPTURE
Start on the live product page.
Drag the green button to the bookmarks bar. On a public preorder page, choose it to carry the clean source URL and standard merchant, price, and currency metadata into a reviewable receipt form.
Review before sealing: public metadata can be missing or wrong. OfferChecksum validates imported formats but does not assume that a product page is authoritative. Confirm every value, add the exact preorder promise, and never enter a customer name, email, address, card number, or secret.
Why this is separate from the normal payment receipt.
Shopify documents that preorders may collect full, partial, or no payment when the order is placed, and advises merchants to inform customers when fulfillment is extended. WooCommerce documents availability dates, upfront or later charging, release-date changes, cancellation, and customer notifications. Those workflows preserve the order state; OfferChecksum preserves the compact commercial promise that accompanied it.
Platform references: Shopify preorder overview, Shopify preorder management, and WooCommerce Pre-Orders documentation.
OfferChecksum does not prove that a merchant had authority, that the customer consented, or that the promise was performed. It proves whether the stored public record still matches the SHA-256 fingerprint created with it.
Create the record before changing the listing.
No account is required. The result includes a public verification link and badge HTML for an order-status page.
Create a free preorder receipt