Denarium.com
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Denarium high security hologram -
Denarium Custom Physical Bitcoin -
Denarium Bitcoin 1/100 BTC Physical Bitcoin -
Denarium Bitcoin 1/10 BTC Physical Bitcoin -
Denarium Bitcoin 1/10 BTC Gold Plated Physical Bitcoin -
Denarium Bitcoin 1/100 BTC Gold Plated Physical Bitcoin -
Denarium Custom Gold Plated -
Denarium 1 BTC Silver -
Denarium 1 BTC SilverPatina
Denarium is a Physical Bitcoin coin manufacturer. Denarium produces easy, handy and secure bitcoin wallets in a coin form. The private key is stored under a security seal without password protection. Denarium also offers a trustless multisignature coins, which eliminates the need to trust the manufacturer. Denarium is operated by Praos Oy. In addition to Denarium, Prasos also operates the Finnish bitcoin broker Bittiraha.fi, one of the largest Bitcoin ATM network in the Nordics, called Bittimaatti and the leading European bitcoin exchange platform Coinmotion.
How does it work?
The Coin
We produce a physical bitcoin coin with actual bitcoin value inside. The coin itself is a quality brass, bronze, silver or gold offline bitcoin wallet that we produce in Finland. The initial focus of Denarium Bitcoin was affordability and security. Along the way, however, we have created 13 different models ranging from very affordable to very luxury secure physical bitcoins. See all the Denarium coins ever produced here, or look up your own coin in the Denarium database.
Hologram
The hologram is a high quality custom made security seal which are produced in Canada in a specialized high security facility. It functions as an added layer of security for the protection of the private key. The hologram significantly increases anti-fraud security making it extremely difficult to counterfeit without leaving any visible marks.
The holograms are labeled individually in distinct series, the E-series and the L-series. The E-series are sold as empty, meaning they are not loaded with bitcoins and the customer can autonomously load a desired amount of bitcoins to the coin. The L-series are sold as loaded meaning they contain a set amount of bitcoins, but the customer can still autonomously load more bitcoins to the coin. The hologram has a “window” where a portion of the public Bitcoin address of the coin can be read for checking balance and loading bitcoins to the coin.
Private key All of our coins have a Bitcoin private key inside the coin. We use a 30-character mini private key format. Each private key is printed only once and for security reasons each phase of product assembly that involves the handling of private keys is directly supervised either by Henry Brade (CEO) or Viljami Räisä (CPO), or both.
To make redeeming the bitcoins inside easier, we print the key not only as plain text but also as a QR code. Modern smartphones are capable of scanning the QR code inside and importing the key directly to a Bitcoin wallet such as Mycelium.