The Casascius Gallery

What exactly is a physical bitcoin? In short, they are real metal coins, and some of them hold the private keys that control digital bitcoins (or other crypto-currencuies). Often, these private keys are behind tamper-proof hologram stickers. The coins are collectible, and some of them are very valuable. They were originally created as educational tools, and hold value are interesting to study because they are physical artifacts of the digital revolution. This website is dedicated to them.