Back when the concept of a digital asset was far less understood than it is now, some early community members chose to buy and hold their Bitcoin in physical bars, similar to gold bars, that allowed for redemption or access to the digitally held funds.
Curiosity surrounding the physical market is resurfacing after reports emerged of a $10 million physical Bitcoin bar, also known as a Casascius Bar, being redeemed in May.
Casascius Bars were created by Mike Caldwell during Bitcoin’s early days in the 2010s and were available in denominations of 1, 10, 25, 100, and 1000 BTC. Each bar had its private key sealed under a tamper-evident hologram. However, production of the bars ceased in 2013, and they are now typically sold through auctions.
The redemption was originally shared on the BitcoinTalk forums, but didn’t gain much attention until July, when users began discussing it on X.
On the forum, a user who goes by John Galt shared his experience redeeming his 100 BTC Casascius Bar and posted, “I did try to sell it a few times, but it’s hard selling something that valuable, and you can’t really just trust anyone. I even looked into auctions, but I’d be getting less than what the Bitcoin itself was worth.”
“Now that it’s worth over $10 million, I knew I couldn’t just keep sitting on it,” he continued.
Galt purchased the bar for roughly $500 in 2012 and redeemed it for a 2,000,000% return on his investment.
“While iconic, these bars are single-key bearer assets. Redemption is irreversible and carries real risk. In the recent 100 BTC unsealing, the owner revealed the mini-key and lost $50,000 in forked BCH. Compared to modern multisig or hardware wallets, they are more symbolic than secure,” Akash Gaurav, the founder of Palladium Labs, told The Defiant.
Gaurav added that the Casascius Bars represent more than just the Bitcoin contained within.
“There is growing recognition of their cultural and historical value. In a HODL-driven ecosystem, they represent deep conviction and generational self-custody. The seller of the 100 BTC bar noted that earlier attempts to sell only attracted lowball offers, likely due to bear market timing and buyer skepticism in a high-value sale,” he said.
Some of the security concerns and buyer skepticism also stem from doubts that Caldwell could have retained copies of some of the bars’ correlated private keys. However, according to Gaurav, this is highly unlikely, and the community consensus is that the bars’ keys are safe.