Editing Collection (section)

=== Structure and Addressing ===
Within a collection, individual records are identified by a unique key, known as a [[record key (rkey)]]. The combination of a user's [[Decentralized Identifier (DID)]] or [[handle]], a collection NSID, and a record key forms an [[AT URI]] that uniquely identifies any record within the network. For example:<syntaxhighlight lang="text">
at://did:plc:abcdef123456/app.bsky.feed.post/3jui7kdo2ck

</syntaxhighlight>This URI points to a specific post (with key <code>3jui7kdo2ck</code> in the <code>app.bsky.feed.post</code> collection of the user with the specified DID.

Record keys are typically generated as [[Timestamp Identifier (TID)|Timestamp Identifiers (TID)]] which embed creation time information, though other formats are supported for specific use cases. The key format requirements are defined by the [[lexicon]] for each collection's record type.