For Sellers

Certify, Protect, and Officially Register the Products You Sell

Whether you are a brand or an individual, Authenticity Office provides you with a trusted system to certify your products, protect their identity, and offer your buyers official proof of authenticity and ownership.

We help you create verified products, build buyer trust, and enhance resale value through secure, globally accessible digital certification.

Authenticity Office supports two types of sellers—each with a clear, safe, and fair certification structure.

1. Brands & Official Manufacturers:

Certify Every Product You Produce

If you are a brand, company, or manufacturer, you can certify all products created under your own brand name.

You can:

  • Register every product you produce
  • Assign serial numbers or model references
  • Issue certificates directly to your customers
  • Provide buyers with verifiable proof of authenticity
  • Transfer ownership when items are resold
  • Build a long-term digital archive of your brand’s products

This system allows brands of all sizes to strengthen their identity, protect their creations, and prevent counterfeits.

Brands cannot certify products from other brands.
Each brand certifies only what they produce.

👉 Register as a Brand Seller

2. Individual Sellers

Certify Your Own Items—Handcrafted, Family-Owned, or Unbranded

If you are an individual, collector, maker, artist, or private owner, you can certify products that belong to you and that are not produced by another brand.

Individuals can certify:

  • Handcrafted items
  • Family-owned or inherited items
  • Custom-made or artisan products
  • Unique personal creations
  • Unbranded or vintage items
  • Collectibles or one-of-a-kind pieces

This gives your product an official ownership passport, digital certificate, and verification page—making it easier and safer to sell or transfer.

Individuals cannot certify branded products created by other companies.
Only the original brand can certify its own creations.

👉 Certify an Individual Product

Why Sellers Choose Authenticity Office

Build Trust with Buyers

A verified certificate and online verification page make your product instantly more credible.

Increase Resale Value

Products with official documentation sell faster and at higher prices.

Protect Your Creations or Assets

Your products are registered in a global authenticity registry.

Enable Safe Ownership Transfers

Every sale or gift becomes official with our ownership transfer service.

24-Hour Processing

Receive your certificate and verification page within one business day.



Our Seller Services

Certify a Product (For Yourself or Your Buyer)

Register your item in the Authenticity Office registry, receive a Certificate ID, verification page, and digital certificate.

Transfer Ownership

When you sell or gift your item, update the registry and issue a new certificate to the new owner.

Verify a Certificate

Buyers and sellers can instantly check authenticity and ownership online.



Ready to Start?

Choose your seller type and begin your certification journey: