A Major Milestone for TAGBASE: Authenticity & Ownership, Now Verifiable on Secondary Marketplaces

While most of the world was slowing down over the holidays — celebrating Christmas, New Year’s Eve, and taking a well-deserved break — our team at TAGBASE was building.

Today, we’re excited to announce a major milestone in our mission to stop counterfeits and empower brands:

👉 The TAGBASE Browser Extension is live.

This extension brings product authenticity verification directly to secondary marketplaces — and, where available, adds blockchain-based proof of ownership on top.

Solving the Two Biggest Problems in Secondary Markets

Secondary marketplaces face two fundamental trust issues:

1. No Physical Access

Buyers have no way to verify whether a seller actually has physical access to the product.

2. No Proof of Ownership

Even if a digital token exists, marketplaces cannot verify whether the seller is the rightful owner — or if the physical item is authentic at all.

TAGBASE solves both.

How the TAGBASE Browser Extension Works

With the TAGBASE browser extension, secondary marketplaces gain a new layer of trust:

  • Physical access verification Sellers prove they physically possess the item by scanning the TAGBASE NFC tag.
  • Proof of authenticity The scan confirms the product is genuine and linked to a verified digital identity.
  • Optional proof of ownership via blockchain If a blockchain token exists, the extension verifies that the seller is the rightful owner.

This turns authenticity and ownership from claims into verifiable facts.

Blockchain Support: Starting with Cardano

At launch, the browser extension supports blockchain-based ownership verification on Cardano.

  • ✅ Cardano ownership verification: live
  • ⏳ Ethereum support: coming soon
  • ⏳ Solana support: coming soon

In the coming days and weeks, we’ll roll out updates to expand multi-chain support — without changing the user experience.

Why This Matters

This is more than just a browser extension.

It’s a missing infrastructure layer for secondary markets — enabling:

  • Trust without centralized intermediaries
  • Authenticity without friction
  • Ownership without ambiguity

For brands, it means control over authenticity even after first sale. For buyers, it means confidence. For marketplaces, it means fewer disputes, less fraud, and higher trust.

Try It Today

The TAGBASE Browser Extension is already live:

We’re just getting started — but this is a big step toward making verifiable authenticity and ownership the standard, not the exception.

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