The URN is specific to the protocol, so a file hash URN under btih (BitTorrent) would be completely different from the file hash URN for ed2k This is the most crucial part of the magnet link, and is used to find and verify the specified file. The following parameters are supported: Parameter Magnet URIs consist of a series of one or more parameters, the order of which is not significant, formatted in the same way as query strings that ordinarily terminate HTTP URLs.
BitTorrent introduced the btmh: protocol in 2020 as part of its BitTorrent v2 changes. The standard for Magnet URIs was developed by Bitzi in 2002, partly as a "vendor- and project-neutral generalization" of the ed2k: and freenet: URI schemes used by eDonkey2000 and Freenet, respectively, and attempts to follow official IETF URI standards as closely as possible. This makes them popular for use as "guaranteed" search terms within the file sharing community where anyone can distribute a magnet link to ensure that the resource retrieved by that link is the one intended, regardless of how it is retrieved. Magnet is a URI scheme that defines the format of magnet links, a de facto standard for identifying files ( URN) by their content, via cryptographic hash value rather than by their location.Īlthough magnet links can be used in a number of contexts, they are particularly useful in peer-to-peer file sharing networks because they allow resources to be referred to without the need for a continuously available host, and can be generated by anyone who already has the file, without the need for a central authority to issue them. Rounded magnet icon used on The Pirate Bay
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