Semantic services

You can now use Safe Creative new semantic services to discover copyright information about any file.

Use the following URL to get information about a file:

http://api-search.safecreative.org/semantic-query?param=value&....

The result is an XML listing all works matching the specified characteristics.

Example:

http://api-search.safecreative.org/semantic-query?md5=9a4bca4293523413c176dd6cd23d20c2

Result:

<works>
  <work>
    <code>0908044196577</code>
    <title>atardecer plateado</title>
    <authors>
      <author>
        <code>0709270000528</code>
        <name>Mario Pena Zapatería</name>
        <human-url>http://www.safecreative.org/user/0709270000528</human-url>
      </author>
    </authors>
    <thumbnail>http://thumbnails-safecreative-org.s3.amazonaws.com/1/00000122/e579/ca7e/dc6a/a75443e756ad/atardecerplateado_thumb.png</thumbnail>
    <license>
      <code>http://creativecommons.org/licenses/by-sa/3.0/</code>
      <name>Creative Commons Reconocimiento-Compartirigual 3.0</name>
      <shortname>CC by-sa</shortname>
      <human-url>http://creativecommons.org/licenses/by-sa/3.0/legalcode</human-url>
      <features>
        <recognition>YES</recognition>
        <distribution>YES</distribution>
        <derivations>INHERITANCE</derivations>
        <commercial>YES</commercial>
      </features>
    </license>
    <human-url>http://www.safecreative.org/work/0908044196577</human-url>
    <machine-url>http://www.safecreative.org/v2/?component=work.get&amp;code=0908044196577</machine-url>
  </work>
</works>

You can use any of the following parameters on your semantic queries:

  • adler32: Adler32 checksum of file contents (16 hex digits- first 8 digits should be zero)
  • crc32: CRC32 checksum of file contents (16 hex digits – first 8 digits should be zero)
  • ed2kfileid: File hash for ed2k network (32 hex digits)
  • md2: MD2 hash of file contents (32 hex digits)
  • md4: MD4 hash of file contents (32 hex digits)
  • md5: MD5 hash of file contents (32 hex digits)
  • part32k.first: SHA1 hash of the first 32k of file contents (40 hex digits)
  • part32k.last: SHA1 hash of the last 32k of file contents (40 hex digits)
  • part32k.middle: SHA1 hash of middle 32k of file contents (40 hex digits)
    • It is calculated as the SHA1 of a 32k chunk starting on file position (filesize – 32k) / 2.
    • If the file size is less than 32k, it is the hash of the whole file.
  • sha: SHA1 hash of file contents(40 hex digits)
  • sha1: SHA1 hash of file contents (40 hex digits)
  • sha384: SHA384 hash of file contents (96 hex digits)
  • sha512: SHA512 hash of file contents (128 hex digits)
  • size: File size in bytes
  • torrent.*: SHA1 hash of torrent chunk hashes for different chunk sizes (40 hex digits)
    • torrent.32768: 32k chunks
    • torrent.49152: 48k chunks
    • torrent.65536: 64k chunks
    • torrent.98304: 96k chunks
    • torrent.131072: 128k chunks
    • torrent.196608: 192k chunks
    • torrent.262144: 256k chunks
    • torrent.393216: 384k chunks
    • torrent.524288: 512k chunks
    • torrent.786432: 768k chunks
    • torrent.1048576: 1024k chunks
    • torrent.1572864: 1536k chunks
    • torrent.2097152: 2048k chunks
    • torrent.3145728: 3072k chunks
    • torrent.4194304: 4096k chunks

All binary contents must be encoded as a string of hexadecimal lowercase digits (0123456789abcdef), using two digits per byte (e.g. 8 bytes = 16 hex digits).

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