System and method for processing secure transactions using account-transferable transaction cards

A transaction processing system comprising:

• an account holder device having a device data processor and a device memory having a private personal key and a public personal key stored therein, the private personal key and the public personal key being associated with an account,
• a plurality of account-variable transaction cards, each having a card microprocessor, a card communication interface configured for communication with the account holder device, and a card memory having a private card key and a public card key stored therein;
• and
• a central processing system comprising
• a first communication interlace configured for selective communication with the account holder device via a first network,
• a second communication interface in communication with a distributed consensus network
• a transaction card management server configured to
• receive, from the account holder device via the network, a request for activation of a first account-variable transaction card having a first private card key and a first public card key, the request including information encrypted using at least the private personal key and the first private card key,
• associate an account function with the first account-variable transaction card, and
• initiate, via a first node in a distributed consensus network, an account blockchain associated with the account and the first account- variable transaction card.

An account-variable transaction card activation device comprising:

• a device data processor
• a network communication interface configured for communication over a network,
• a card communication interface configured for data communication with each of a plurality of account variable transaction cards, each having an associated private card key and an associated public card key,
• a device memory having stored therein
• a private personal key and a public personal key stored therein, the private personal key and the public personal key being associated with an account,
• an application comprising instructions for the device data processor to establish data communication with a target card, the target card being one of the plural ity of account-variable transaction cards,
• receive information from the target card, the information including the public card key and the private card key of the target card;
• and
• transmit, to a central processing system via the network, a target card activation request, the request including information encrypted using at least the private personal key and the private card key of the target card