Efficient validation of transaction policy compliance in a distributed ledger system

A proposing node comprising one or more processors which, alone or in combination, are configured to provide for performance of the following steps:

• receiving, by a proposing node, a transaction policy compliance check trusted application from a regulator;
• executing, by the proposing node, the transaction policy compliance check trusted application, in a trusted execution environment (TEE);
• remotely attesting by the proposing node, the trusted application instance in the TEE from the regulator;
• executing, by the proposing node, the trusted application instance on a client transaction request to generate a policy compliance result;
• producing, by the proposing node, with the secret inside the trusted application instance, a digital signature over an input combined with a result of the trusted application execution;
• generating, by the proposing node, a transaction object including the policy compliance result and a proof of the execution;
• enforcing, by the regulator, policies in a distributed ledger system, wherein the regulator does not directly participate in a consensus protocol of the distributed ledger system;
• and
• proposing, by the proposing node, the transaction object to the distributed ledger system.