Opendime v4 - Bitcoin USB stick

Opendime v4 by Coinkite is the smart Bitcoin USB stick – a bearer asset like digital cash for physical BTC transport and easy gifting. Load BTC onto it (via Sparrow/Nunchuk/Electrum), then hand it over like cash: the recipient verifies the balance via LED (balance check without spending, only USB power needed), spending is only possible after mechanical destruction (tamper-evident).

Compact, open-source, QR code for deposit, PSBT support – no seeds, keys are self-destructing. Ideal for tips, micropayments, or offline transfer, compatible with all wallets.

Buy your Opendime V4 Bitcoin USB stick at Copiaro – the ultimate Bitcoin hardware for physical HODL and gifting. Secure, discreet, and tamper-proof: transport Bitcoin like cash – a revolution for self-custody!