Patent attributes
A request to exchange of a first quantity of a first fungible digital token type stored within a smart contract instance recorded in a public trust ledger and owned by a first party within the public trust ledger may be received via a communication interface at a database system. The request may authenticate a first account in the database system. The first account may be linked with the first party within the public trust ledger. The smart contract instance may be executed to determine whether the requested exchange is permissible based on one or more transaction rules included within the smart contract instance. The database system may be updated to reflect a transaction recorded within the public trust ledger when it is determined that the requested exchange is permissible.
