A Commerce ID™ uniquely identifies an individual or entity for the purposes of conducting commerce or monetary transactions.
The Commerce ID™ can be used once for a single transaction or re-used in multiple transactions. It can be publicly associated with identifying information or kept private.
It allows accountability with total privacy, even if the record of transactions is public (eg. a P2P/peer-to-peer database).
An example of a Commerce ID™ would be a GUID (Globally Unique Identifier) that would be generated by the individual or entity. That ID might be associated with a name or email or other identifying information.