Recently, a collector decided to open two physical Casascius bitcoin bars, each containing 100 BTC, with a total value of approximately $19.2 million.
Entrepreneur Mike Caldwell created the Casascius line, issuing not only coins of different denominations but also heavy bars, calibrated at 100 BTC, 500 BTC, and 1000 BTC. For example, in series 1 (S1), Caldwell issued 57 bars of 100 BTC, and only seven of them remain intact.
The 200 BTC spent in 2012 were used by blockchain analysis platforms, such as btcparser.com.
Of the pairs opened last month, the bitcoins were moved elsewhere. Both contained 100-BTC and belonged to series 2 (S2). Caldwell manufactured around 81 of these bars, and according to data from casasciustracker.com, 30 of them have still not been revealed.
Around thirty 100 BTC bars have not been spent.
Before this, the last expenditures of 100 BTC bars occurred in October 2024, and a previous episode took place in October 2021.
The valuable 1000 BTC bars have an even more complex history: only 16 pieces were issued, and only two remain sealed or unspent.
