Self-enforcing security token implementing smart-contract-based compliance rules consulting smart-contract-based global registry of investors

A network node comprising:

• at least one processor;
• at least one memory communicatively coupled to the at least one processor;
• at least one network interface communicatively coupled to the at least one processor;
• wherein the network node is configured to be within a plurality of network nodes communicatively coupled in a peer-to-peer network of network nodes implementing a distributed ledger;
• wherein the network node is configured to be communicatively coupled to at least one remotely located computing device through the at least one network interface;
• and
• wherein the at least one processor is configured to:
• receive, from a remotely located computing device, a request to transfer a security token;
• execute a plurality of compliance rules associated with the security token;
• wherein at least one of the plurality of compliance rules is implemented using at least one smart contract separate from an originating smart contract that implements the security token;
• wherein the at least one smart contract is implemented on the distributed ledger and references a global registry;
• transfer the security token based on the execution of the plurality of compliance rules;
• and
• wherein the global registry comprises at least one personally identifiable information (PII) hash for each of at least one investor associated with the transfer of the security token, wherein the at least one PII hash for each of the at least one investor is committed to the distributed ledger, wherein each of the at least one PII hash for each of the at least one investor is updated when PII of a respective one of the at least one investor changes.