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identifiers.md

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Identifiers

Each item at Internet Archive has a identifier. An identifier is composed of any unique combination of alphanumeric characters, underscore ( _ ) and dash ( - ). While there are no official limits it is strongly suggested that identifiers be between 5 and 80 characters in length.

Identifiers must be unique across the entirety of Internet Archive, not simply unique within a single collection.

Once defined an identifier can not be changed. It will travel with the item or object and is involved in every manner of accessing or referring to the item.

In IAS3, identifiers are defined implicitly in the target URL. For example:

curl --location --header 'x-amz-auto-make-bucket:1' \
--header "Authorization: LOW $accesskey:$secret" \
--header "x-archive-meta-collection:test_collection" \
--upload-file /Users/archive/Desktop/The_Open_Source_Way_03.pdf \
http://s3.us.archive.org/vmb_tosw_trial_upload_03/The_Open_Source_Way_03.pdf

The identifier in this command is vmb_tosw_trial_upload_03. The item may be viewed at its details page. The details page for any item is simply http://archive.org/details/ followed by the identifier. The details page for this example is:

http://archive.org/details/vmb_tosw_trial_upload_03

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