Galaxy Research: Assets of Casascius physical early Bitcoin commemorative coins emerge, once holding over 91k BTC

Shenchao TechFlow News, June 30 – Galaxy Research posted on X platform that Casascius is a physical Bitcoin commemorative coin, which contains a Bitcoin private key inside and is sealed with a holographic sticker. If the holographic sticker is torn off, the private key is exposed, and the holder can transfer the corresponding BTC on-chain.

Between 2011 and 2013, approximately 28k Casascius coins were minted, carrying a total of about 91,469 BTC. As of now, only about 35.3k BTC of these physical coins remain in an "unspent" state. Among them, founder Mike Caldwell produced 22 high-value Casascius coins with a face value of 1,000 BTC between 2011 and 2013, including 16 gold-plated bars and 6 pure gold coins. By 2014, 16 of them had been redeemed.

Notably, the remaining 6 pure gold coins of 1,000 BTC remained unopened for about 11 years until December 5, 2025, when two of them were transferred on the same day, releasing a total of 2,000 BTC. Currently, 4 gold Casascius coins of 1,000 BTC remain sealed.

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