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Returns, refunds and cancellations

This is ChainChum's policy for everything you buy here: originals, editions, handmade goods, digital downloads, lesson seats and printed certificates. ChainChum is the merchant of record, so we handle every refund ourselves. To ask for one, write to chainchum@dataexpansed.com with your order number (it looks like CC-7K2M9Q), or reply to any order email. We answer within one business day.

Before you pay

Nothing is charged until you press Pay on the checkout page. If you leave checkout, the piece is released after 30 minutes and nothing is owed.

Originals, editions and handmade goods

  • Changed your mind: return the piece within 14 days of delivery. Write to us first and we arrange the return with the seller. You pay return shipping. We refund the item price and its tax once the seller confirms the piece is back, normally within 5 business days.
  • Damaged, lost or not as described: write to us within 14 days of delivery (or of the expected delivery date if it never arrived), with photos. We refund in full, shipping included, once the problem is confirmed.

Digital downloads

Downloads are final once paid, unless the file is broken, missing or not what the listing described. Then we fix it with the seller or refund you in full.

Lesson seats

  • The teacher cancels the lesson: every seat is refunded in full, and you get one email.
  • You can't come: reply to your booking confirmation and we sort it out with the teacher.

Printed certificates

The printed certificate add-on can be cancelled and refunded until it is printed. If it arrives damaged or never arrives, the rule for damaged or lost pieces above applies.

What a refund does to the certificate (NFT)

Every artwork comes with a certificate of authenticity, recorded as an NFT on the Base network. The certificate is part of the artwork: it has no price of its own and is never sold, refunded or cancelled separately. When an order is refunded:

  • the certificate goes back to the artist, or is cancelled if it was issued at the sale, and its public record shows the return; the order page tells you which;
  • downloads stop working;
  • any QR stickers from a printed certificate read Void.

You never pay in cryptocurrency and never hold the token yourself, so a refund is always in US dollars, to the card or wallet you paid with. Your bank may take 5 to 10 business days to show it.

Disputes

If you and the seller can't agree, ChainChum decides, using the order, the photos, the tracking and the certificate. You can also dispute a charge with your bank; we answer every dispute.

These rules are part of our Terms of Service (sections 5 and 6). For everything else, see Customer support.