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The Decentralized Identifier Working Group has published a First Public Working Draft of Use Cases and Requirements for Decentralized Identifiers. This document sets out use cases and requirements for a new type of identifier that has 4 essential characteristics:

  1. decentralized: there should be no central issuing agency;
  2. persistent: the identifier should be inherently persistent, not requiring the continued operation of an underling organization;
  3. crytopgraphically verifiable: it should be possible to prove control of the identifier cryptographically;
  4. resolvable: it should be possible to discover metadata about the identifier.

Although existing identifiers may display some of these characteristics, none currently displays all four.

Original source: https://www.w3.org/blog/news/archives/8072

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