Systems and methods for enforcing compliance or private transactions

A computer-based system on a public blockchain network, the computer-based system comprising:

• a public blockchain network configured to enable permissioning of private transactions, the public blockchain network including:
• a blockchain privacy network having multiple nodes,
• at least one of the multiple nodes of the blockchain privacy network having a computer processor configured to execute a policy enforcement computing system,
• the policy enforcement computing system configured to:
• using at least one compliance zero-knowledge proof, enforce compliance of at least one private transaction with at least one predefined policy, the private transaction occurring on the public blockchain network;
• control at least one user identity by issuing a decentralized private credential (DPC) to a verified user;
• integrate at least one identity assertion into the decentralized private credential (DPC), the at least one identity assertion associated with the verified user;
• and
• using at least one verification zero-knowledge proof, verify the at least one identity assertion;
• wherein the at least one transaction is organized into a sealed pool, where a pool-wide policy is enforced by ensuring that each user has a decentralized private credential (DPC) identity of a sufficient grade for transacting in the sealed pool.

A computer-based method on a public blockchain network, the computer-based method comprising:

• configuring a public blockchain network to enable permissioning of private transactions, the public blockchain network including:
• configuring a blockchain privacy network having multiple nodes,
• configuring at least one of the multiple nodes of the blockchain privacy network having a computer processor to execute a policy enforcement computing system,
• configuring the policy enforcement computing system to:
• using at least one compliance zero-knowledge proof, enforce compliance of at least one private transaction with at least one predefined policy, the private transaction occurring on the public blockchain network;
• control at least one user identity by issuing a decentralized private credential (DPC) to a verified user;
• integrate at least one identity assertion into the decentralized private credential (DPC), the at least one identity assertion associated with the verified user;
• and
• using at least one verification zero-knowledge proof, verify the at least one identity assertion;
• wherein the at least one transaction configured into a sealed pool, where a pool-wide policy is enforced by ensuring that each user has a decentralized private credential (DPC) identity of a sufficient grade for transacting in the sealed pool.

A computer-based method in a public blockchain network, the computer-based method comprising:

• permissioning private transactions by applications on a public blockchain by:
• using a blockchain privacy network having multiple nodes, at least one of the multiple nodes of the blockchain privacy network having a secure cryptoprocessor implemented as a dedicated microprocessor configured to execute a policy enforcement computing system;
• using one or more compliance zero-knowledge proof enforce compliance of at least one private transaction with at least predefined policy, the private transaction occurring on the public blockchain network;
• controlling at least one user identity by issuing a decentralized private credential (DPC) to a verified user;
• integrating at least one identity assertion into the decentralized private credential (DPC), the at least one identity assertion associated with the verified user;
• and
• verifying the at least one identity assertions;
• wherein the policy enforcement computing system is on the blockchain privacy network and is configured to manage transactions by computationally verifying that the transaction complies with at least one programmable policy that determines whether the transaction is compliant;
• wherein the blockchain privacy network is configured to facilitate policy enforcement using zero-knowledge by combining the policy enforcement computing system with a transaction privacy system;
• and
• the policy enforcement computing system is further configured to use dedicated domain-specific language for specifying policy requirements.