US 12,229,778 B2
Systems and methods for building blockchains for verifying assets for smart contracts
Jeffrey Rule, Chevy Chase, MD (US); Abdelkader Benkreira, Washington, DC (US); Rajko Ilincic, Annandale, VA (US); and William Carroll, Huntingtown, MD (US)
Assigned to CAPITAL ONE SERVICES, LLC, McLean, VA (US)
Filed by Capital One Services, LLC, McLean, VA (US)
Filed on Jun. 15, 2020, as Appl. No. 16/901,718.
Prior Publication US 2021/0390549 A1, Dec. 16, 2021
Int. Cl. G06Q 20/40 (2012.01); H04L 9/00 (2022.01); H04L 9/06 (2006.01)
CPC G06Q 20/4016 (2013.01) [G06Q 20/403 (2013.01); H04L 9/0637 (2013.01); G06Q 2220/00 (2013.01); H04L 9/50 (2022.05)] 15 Claims
OG exemplary drawing
 
1. A system, comprising:
a memory for storing a plurality of data blocks each corresponding to a digital representation of a distinct verifiable characteristic associated with a real world asset, and an asset identifier, identifying the real world asset, wherein one or more data blocks with a common asset identifier represent the real world asset with one or more verifiable characteristics;
one or more verification nodes, each having a distinct tokenized reputational score and configured to:
verify an asset characteristic for a transaction in an old blockchain block of a blockchain based on an asset identifier;
attest to an authenticity of the asset characteristic, the attestation comprising:
digitally signing, based on the verification of the asset characteristic, a new blockchain block with a private key thereby encrypting the new blockchain block; and
offering the new blockchain block for addition to the blockchain;
stake a token corresponding to the tokenized reputational score against an accuracy of the new blockchain block added to the blockchain, and
receive an updated tokenized reputational score based on the staked token corresponding to the tokenized reputational score and a determined accuracy of the new blockchain block;
one or more mining nodes, each configured to:
confirm a digital signature of one of the verification nodes on the new blockchain block, the confirmation comprising decrypting the new blockchain block by applying a public key;
verify the asset characteristic within the new blockchain block; and
receive a reward for confirming the digital signature and verifying the asset characteristic within the new blockchain block;
the one or more mining nodes being configured to add the confirmed and verified new blockchain block to the blockchain from the memory;
a secure key issuer node for issuing a public key and a private key for each of the one or more verification nodes; and
a smart contract to facilitate a digital sale of the real world asset, represented as one or more validated encrypted data blocks, on the blockchain.