Casascius Coins were physical bitcoin products sold until 2013. Made of metal, Casascius Coins had a tamper-resistant sticker concealing the private key and could be physically exchanged. The coins came preloaded with fixed amounts of 1, 10, 25, 100, and 1000 bitcoin (BTC). Unredeemed versions of Casascius Coins are highly valued on the collector's market and sell for a large premium.
Share this news and win 10 USDT with daily contest on CryptoFingers Telegram.