Prokey Optimum
A compact offline hardware wallet from Prokey that keeps the private key on the device and signs transactions without exposing the seed. Prokey lists support for Bitcoin, Ethereum, Litecoin, Tether and thousands of other assets, and also sells a ColdSteel metal backup.
Services
- Offline key storage
- On-device transaction signing
- Web-based wallet interface
- Multi-asset support
Highlights
Source: Official website. Last checked 2026-09-18. Spot an error? Tell us.