Two dormant 13-year-old Casascius physical bitcoins experienced a sudden movement, with 2,000 BTC being transferred.

On December 7, CoinDesk reported that a wallet tied to Casascius physical bitcoins—dormant for over 13 years—recently transferred 2,000 BTC (roughly $180 million). The BTC hadn’t been moved since 2011–2012, when Bitcoin traded for less than $15. Launched in 2011 by American entrepreneur Mike Caldwell, Casascius coins featured embedded private keys and tamper-evident holograms, acting as offline cold storage. Denominations spanned 1 BTC to 1,000 BTC. Production was halted in 2013 after the U.S. Financial Crimes Enforcement Network (FinCEN) labeled them unregistered money transmitters. Some 90,000 units remain in circulation, though most hold small BTC amounts. Only 6 coins and 16 gold bars contain 1,000 BTC apiece. It’s unclear whether the transfer is for sale, internal restructuring, or security purposes (such as risk of physical material degradation). Earlier this year, a user holding a 100 BTC Casascius gold bar had to move roughly $9 million in funds to a hardware wallet, as importing the private key into a modern wallet was difficult.