ADIs are URL-based digital identities with hierarchical key sets that can manage data, tokens, and sub-identities. They can also be used for more complicated operations such as token issuance, off-chain consensus building, and multisignature transactions. While key hierarchies are useful for organizing priorities, identity hierarchies are useful for organizing objects. Objects might include different token types held by a user, different departments within an organization, or different data types collected by an array of IoT sensors. How a company organizes its departments, financial records, or data structures can be reproduced in the organization of objects on the Accumulate network.