Functions as a USB flash memory that can only be written to once. Compatible with any computer, laptop or smartphone. A QR code and text information are available in the device as instructions.

The private key is created in the device itself, not visible to anyone, not even you!

The Bitcoin world is changing fast, but Opendime was built on the building blocks on which Bitcoin is based. These have not changed in the last 5 years.

Give and receive opnedimes. As long as they have not been opened, you can be sure that nobody knows the private keys and that the bitcoins are safe.

The physical Bitcoin as it was conceived: give the opendime to any person unlimited times! As easy as a handshake. No miner fees or confirmation delays.

Opendime uses Bitcoin message signing, normal (not HD) Bitcoin payment addresses and private keys in WIF format.