Coinkite is a Canadian Bitcoin hardware company founded in 2012 that specializes in Bitcoin-only self-custody devices. Its products include the Coldcard signing device, Opendime physical Bitcoin bearer sticks, the Blockclock displays, NFC cards, Satschip chips and steel seed backups. Coinkite emphasizes air-gapped workflows and a "Don't Trust, Verify" philosophy, with no altcoin support.
