Case study

Denario Wallet,
giving a gold token somewhere to live.

A branded wallet where Denario’s customers buy and hold the gold and silver coins Denario had already issued.

Client — Denario, SwitzerlandScope — Branded white-label wallet, token listing, self-custody architecture
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The challenge

Denario had the metal and the token, but nowhere for customers to buy it

Denario is a Swiss issuer based in Lenzburg, and its two tokens, the Denario Gold Coin and the Denario Silver Coin, are each backed by one ounce of physical metal. The metal is held in a bonded warehouse in Switzerland, insured, and audited twice a year.

So the hard half was already done: metal, vault, audits and token. What was missing was the product around it. Denario needed a platform to list its tokens on, so that clients and investors could buy gold and silver directly, in a wallet that looked and felt like Denario’s own.

The brief was to connect to what already existed and build that wallet, without rebuilding anything underneath it.

The approach

Plug in, don’t start over

Scrapping an existing token to launch a new one costs time, money and the trust of the customers who already hold it. So the token, the vault and the audit cycle stayed exactly as they were, and we built around them.

The wallet sits on top as a listing platform: Denario’s gold and silver tokens are listed in it, and each one stays backed by one ounce of physical metal. Everything that makes the token trustworthy was already in place, and the wallet only had to make it easy to reach.

The Denario Wallet, where customers buy and hold

We built the Denario Wallet as a white-label solution. Investors buy gold and silver tokens directly in it, and hold them there themselves. Neither Denario nor we can access them.

The Denario website labels it “Powered by OnchainLabs”. To the customer, it is Denario’s product, which is exactly how it should be. The brand on the screen belongs to the issuer, and the technology underneath stays out of the way.

Denario Wallet on a laptop and a phone, showing the Denario Gold Coin and Denario Silver Coin and the buy token flow
The Denario Wallet on desktop and mobile: gold and silver tokens listed and bought under Denario’s brand.
The Denario Wallet on a phone, listing the Denario Gold Coin and Denario Silver Coin with the total balance
The Denario Gold Coin and Denario Silver Coin listed in the wallet, on mobile, under Denario’s brand.

The bonded warehouse is a custody decision

Investment gold carries no VAT in Switzerland or the EU anyway. Silver does. When the metal sits in a bonded warehouse, VAT and customs duty only fall due once it leaves.

For a silver product, that makes a noticeable difference, and for cross-border trade it is a prerequisite. Choosing the vault is a product decision, and one you make early. Denario made it before the wallet existed, which is why the wallet could be built on it.

An ounce is a big unit

One token per ounce is cleanly backed and easy to audit. For a first-time buyer, though, an ounce of gold is a lot of money.

Small amounts have been technically possible for years, yet they only become usable when a product makes them simple.

In the end, that decides who buys for the first time. The token is the same either way, but the way a customer meets it is not, and that is what the wallet is for.

What was built
  • A white-label wallet under the Denario brand, with a “Powered by OnchainLabs” attribution
  • A listing platform for Denario’s gold and silver tokens, so investors buy them directly in the wallet
  • Self-custody by design: neither Denario nor OnchainLabs can access a customer’s tokens
  • A connection to the metal, vault, audits and tokens already in place, with nothing rebuilt

The outcome

Denario did not need a new token. It needed a platform to list the one it already issues, and a wallet its customers could buy and hold it in. That now exists, under Denario’s name, with the tokens in the customer’s own hands.

Finding the right platform to list and integrate tokenized gold and silver coins was a challenge, until we partnered with OnchainLabs. Through our partnership, they supported us in creating the branded Denario wallet, making precious metal investments more accessible, secure, and innovative. Their technology provided the seamless infrastructure we needed to bridge gold and silver with blockchain, giving investors a user-friendly and trustworthy way to manage their assets.

CEO, Denario
Token and warehouse facts from denario.swiss, August 2026.

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