[satanik]

Contend addressed documents wouldn't fit directly into what DID is trying to accomplish. A DID is supposed to be a unique id to identify an identity, such as a Person, a company or even your pets. A DID maps to a DID Document that may change overtime, e.g.: the public keys listed in it. If we were using content-addressing for the identifiers, they would be changing over time, which will be hard to use in a variety of systems.

This doesn't mean that we cannot use content-addressing. For instance, in IPFS world, the DID could actually be using IPNS to point to a CID. This allows to have a persistent DID pointing to CIDs at different times. There's actually a DID method called IPID (based on IPFS), that uses a strategy similar to this.