This article from Altcoin Buzz discusses the history of the Casascius Physical Bitcoin and includes a catalog of denominations and types. -Editor
Casascius Physical Bitcoins or Casascius coins are physical metal coins created by Bitcoin user Casascius (Mike Caldwell, Sandy, Utah, USA) and sold
until Nov 26, 2013. It contains an embedded piece of paper with digital Bitcoin value, covered by a tamper-resistant hologram. Casascius coins are available in
the denomination of 1, 10, 25, 100, and 1000 BTC increments.
Each Coin has its own Bitcoin address and a redeemable “private key” which is covered by a hologram. To read the private key inside the coin the person need
to peel the hologram, once peeled and redeemed the coin will no longer have any Bitcoin value. These coins are designed for face-to-face transactions.
The initial success of the 1 BTC Coins inspired Mike to create physical bitcoins of other denominations
Suspension of sale
The Financial Crimes Enforcement Network (FinCEN), a branch of the Treasury Department, informed Casascius that minting physical coin and transmitting money
requires state license and federal level registration. And thus from Nov 27, 2013, onwards, the sale is suspended for items that contain digital bitcoins, the
current items in the sale does not contain bitcoins.
Fake Casascius Coins
There have been multiple reports of fake Casascius coins being circulated in the market. The counterfeit and unauthorized coins even appear to mimic the
spelling error from the Series 1 coins. Check out this bitcointalk link where the author compares an original Casascius coin with a fake one.
One should not accept Casascius Bitcoins if the hologram is damaged because the integrity of the coin depends upon the hidden embedded key code inside the
To read the complete article, see:
the Casascius Physical Bitcoin? Exploring an important part of Bitcoin's history
You probably first read about these eight years ago in The E-Sylum. Anybody have one in their collection? -Editor
To read the earlier E-Sylum articles, see:
BITCOINS GO FROM VIRTUAL TO PHYSICAL (https://www.coinbooks.org/esylum_v14n45a22.html)
U.S. GOVERNMENT SHUTS DOWN PHYSICAL BITCOIN MINTER
Wayne Homren, Editor
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