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NFT certificates

How to verify an NFT certificate of authenticity

1 min read · Updated 2026-10-27

Anyone can verify a ChainChum certificate, with or without an account. It takes under a minute.

Step by step

  1. Scan the QR code on the certificate, the packing slip or the holographic sticker, or open chainchum.app/c/<certificate-id>.
  2. Check the details. The verify page shows the photos, title, artist, edition and issue date. Compare them with the piece in front of you.
  3. Look for the green match. The page recomputes the content hash from the record and compares it with the one stored in the NFT. A match means nothing has been changed since the certificate was issued.
  4. Read the history. Every sale, resale and inheritance through ChainChum is listed with its date.
  5. Optional: check the blockchain. A link opens the NFT on a public Base block explorer, so you can confirm the record without trusting ChainChum at all.

Warning signs

  • A QR code that opens a site other than chainchum.app.
  • Details on the verify page that don't match the piece, such as a different size or edition number.
  • A history that shows "transferred off-platform" when the seller claims they bought it on ChainChum.

If something looks wrong, contact us with the certificate ID before you pay.

Questions

Do I need a wallet to verify an NFT certificate?

No. The verify page works in any browser. The blockchain link is there for anyone who wants to double-check.

Can a certificate be faked?

Someone could print a fake paper certificate, but they can't fake the record on the verify page or the blockchain. Always scan the QR code rather than trusting the paper.