Re: [dxwg] digest for DCAT distributions (#1287)

@agbeltran said:

> Hi @cristianolongo @andrea-perego - this seems to me a quite generic use case that might be good to consider in DCAT too.

Agreed.

For our records:

DCAT-AP 2.0.1 describes the purpose of [`spdx:checksum`](https://spdx.org/rdf/terms/#d4e165) as follows:

> This property provides a mechanism that can be used to verify that the contents of a Distribution have not changed. The checksum is related to the download URL.

An example of its use:

https://www.europeandataportal.eu/sparql?default-graph-uri=&query=describe+%3CnodeID%3A%2F%2Fb621486445%3E&format=text%2Fturtle

````turtle
@prefix spdx: <http://spdx.org/rdf/terms#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://europeandataportal.eu/set/distribution/2f3d36a4-79de-4cfb-85d7-706519be7b25> spdx:checksum _:b621486445 .

_:b621486445 a spdx:Checksum ;
  spdx:algorithm spdx:checksumAlgorithm_sha1 ;
  spdx:checksumValue "71bf58e542a47d7092ed1924f34db91bb24fe2c2"^^xsd:hexBinary .
````

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Received on Monday, 18 January 2021 21:14:10 UTC