What are NFTs and QR-linked certificates

NFTs (Non-Fungible Tokens) and QR-linked certificates are digital technologies used to verify authenticity, ownership, and provenance—especially in industries like gemstone jewelry, luxury goods, and art.

---

🔗 1. NFTs (Non-Fungible Tokens)

Definition:
An NFT is a unique digital asset stored on a blockchain, which proves the ownership and originality of a specific item—whether digital or physical.

In Jewelry:

• An NFT can represent a digital certificate of authenticity for a piece of jewelry or gemstone.
• It includes metadata such as:
  • Gemstone details (type, weight, cut, origin)
  • Owner history
  • Brand authentication
  • Timestamp of creation
• Stored on platforms like Ethereum, NFTs cannot be altered, making them tamper-proof.

Benefits:

• Immutable proof of ownership
• Transferable in resale markets
• May include extras like digital twins, loyalty perks, or AR experiences

---

📱 2. QR-Linked Certificates

Definition:
A QR-linked certificate is a scannable Quick Response (QR) code—often engraved or included in the packaging—that links to a secure online record.

In Jewelry:

• Scanning the QR code opens a webpage or app that displays:
  • Gemstone specifications
  • Grading report (e.g., from ICIA, GIA)
  • Chain of custody (mine → cutter → seller)
  • Authentication by the jeweler or certifier

Benefits:

• Easy for consumers to access details instantly
• Allows updates if the item is resold or re-certified
• Compatible with smartphones—no blockchain knowledge needed

---

🔐 Comparison

Feature	NFT Certificate	QR-Linked Certificate
Tech Base	Blockchain (e.g., Ethereum)	Cloud/Web-based
Ownership Proof	Yes (transferable)	Sometimes (static unless managed)
Tamper-Proof	Yes	Depends on hosting security
Access	Digital wallet or app	Any QR code scanner
Popular Use Case	High-value, collectible, resale items	Everyday authenticity, mass market