URN

Uniform Resource Name

A Uniform Resource Name is used to identify a file on the network by providing a unique key (taken from the files hash).

Examples:

urn:sha1:YNCKHTQCWBTRNJIV4WNAE52SJUQCZO5C

A URN representing a specific MP3 file of the "I have a dream" speech by Martin Luther King, using the files SHA1 hash.

urn:tree:tiger:BL5OM7M75DWHAXMFZFJ23MU3LVMRXKFO6HTGUTY

The URN of the same file, this time using it's TigerTree root hash.