Bitzi is a website where volunteers can contribute reports of any kind of digital file, with identifying metadata, commentary, and other ratings. This information is compiled into a reference work named "Bitpedia", described as a "digital media encyclopedia". The Bitpedia information is made available for reuse under an open content license (Creative Commons Attribution - Share Alike 2.0).
Files are identified by applying a strong hash function to their contents, which gives a distinct "fingerprint" for each file. Bitzi calls the combination of standard hash functions used by its system "Bitprints."
The Bitzi website is a project of a company of the same name based in San Francisco.
Some peer-to-peer file sharing programs offer an option to look up local files or network search results at the Bitzi website for more (or more trustworthy) information.
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