About Cryptnox

C-WaaS (Card Wallet as a Service) is by far the most innovative solution Cryptnox has developed: blockchain-native card scheme infrastructure through which banks, fintechs and financial institutions issue cards under their own brand, authorise every payment against their own rules and settle directly on chain.

• Branded cards and apps – Cards in three configurations (crypto-only, or combined with EMV and FIDO2), paired with branded iOS and Android cardholder apps.
  
  
• Issuer backend on AWS – Hosted by Cryptnox or deployed in the operator’s own AWS account, the backend handles automated card issuance, personalisation and shipping, and authorises every payment against the operator’s rules (limits, allowed assets, recipients and smart contracts) over encrypted communication with the cards.
  
  
• Issuer control without custody – Cards ship personalised with no seed phrase. The cardholder’s key never leaves the card, and the issuer holds a separate authorisation key, so neither can pay alone. Cryptnox positions this as qualifying for self-custody treatment under EU and Swiss frameworks.
  
  
• Point of sale acceptance – A C-WaaS point of sale application on standard payment hardware. Merchants are paid on chain, per transaction, with no acquirer in between.
  
  

C-WaaS is protected by granted patents US 11,791,996 B2 (Shamir secret sharing for key recovery), US 12,101,400 B2 (secure key injection), US 12,132,824 B2 (seedless initialisation), US 12,719,697 B2 (issuer-controlled co-signing), EP 4 060 540 B1 (N-of-M secure-element signing, Unitary Patent) and Chinese patent ZL 202211056164.7 (secure-element PKI and blockchain attestation). European applications EP 4 258 596 A1 (institutional card issuance, the European counterpart of US 12,719,697) and EP 4 148 608 A1 (smart card authentication and key certification) are under examination. The same patented base powers our Shamir secret sharing cards.