What is a DID?
A DID is a decentralized identifier, for example, did:kilt:light:014sxSYXakw1ZXBymzT9t3Yw91mUaqKST5bFUEjGEpvkTuckar
This is a unique set of numbers and letters that uniquely identifies an identity (like a digital fingerprint) in a verifiable, decentralized way.
In KILT, identity is built by adding credentials to the DID. A DID can be used for people, machines, services and anything that identities can be built on.