Learn how to use #COLDCARD Q's covert calculator mode!
Learn more at coldcard.com
Coinkite
coinkite@primal.net
npub12ctj...c5ky
Coinkite: OPENDIME, 1st & only #Bitcoin bearer instrument. COLDCARD ultra-secure open hardware wallet. BLOCKCLOCK. TAPSIGNER. And more! est. block 141,000