Samsung patents smart-contract crypto wallet with multi-device recovery

Samsung's patent US 2026/0212355 describes a crypto wallet where a smart contract handles part of transaction signing, and other devices the user owns help restore access to the wallet. Chainalysis estimates about 3.7 million BTC, nearly 20% of supply, has been lost to missing keys.

• Patent published in the US on July 23 as US 2026/0212355
• Smart contract verifies transaction data instead of a private-key signature
• A new device is registered with help from one the user already owns
• Chainalysis: about 3.7 million BTC lost, nearly 20% of supply