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  <p>Bluesky PBC developed DID Placeholder when designing the AT Protocol (atproto) because we were not satisfied with any of the existing DID methods. We wanted a strongly consistent, highly available, recoverable, and cryptographically secure method with fast and cheap propagation of updates.</p>

     

       
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  <p>While PLC originally stood for "placeholder", the system has been in production use for several months, with over half a million registered accounts in the atproto network as of August 2023. While it is conceivable that the method will evolve or be replaced over time by a successor method, we feel that the current system provides value and is worth consideration as a persistent identifier for other applications.</p>

     

       
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  <p>While PLC originally stood for "placeholder", the system has been in production use for several months, with over six million registered accounts in the atproto network as of August 2024. While it is conceivable that the method will evolve or be replaced over time by a successor method, we feel that the current system provides value and is worth consideration as a persistent identifier for other applications.</p>

     

       
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  <article>

     

       
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    <h3>For Developers</h3>