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Back to Hardware Wallets
CoinkiteActive Open Source USB

Opendime

Brand

Coinkite

Connectivity

USB-A

Display

None

Supported Coins

Bitcoin only

Released

2016

Price

$17.50

About Opendime

The Opendime is a disposable, single-use Bitcoin hardware wallet — essentially a physical Bitcoin bearer instrument. It generates a private key internally that cannot be extracted until the device is physically 'popped' (broken). Before opening, anyone can verify the balance via the public key. Opendimes are used for physical Bitcoin transactions, gifts, and as a secure bearer instrument.

Other Coinkite Wallets

Coldcard Mk3Discontinued

MicroSD (air-gapped), USB Micro-B · 2019

Coldcard Mk4Active

MicroSD (air-gapped), USB-C, NFC · 2022

Coldcard QActive

MicroSD (air-gapped), USB-C, NFC · 2024

TapsignerActive

NFC only · 2022

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