> hash total metadata > which fields should not be hashed? > marked as (mutable)
```
```
{
{
"title": "Mountains", // no special characters, not unique
"title": "Mountains", // no special characters, not unique
"registrar": "Lisa Kostrzewa", // who has registered, the work, we use an internal UUID which we map in the user metadata database // was field "creator", "registrar"
"registrar": "Lisa Kostrzewa", // who has registered, the work, we use an internal UUID which we map in the user metadata database // was field "creator", "registrar"
"description": "A mountain landscape in Austria",
"description": "A mountain landscape in Austria",
"attribution": "LisK & Kira", // was field "contributors", to be used e.g. for giving attribution in CC license
"attribution": "LisK & Kira", // was field "contributors", to be used e.g. for giving attribution in CC license (mutable)
"publisher": "self",
"publisher": "self",
"subject": " ", // we will not use that field anymore in the UI
"subject": " ", // we will not use that field anymore in the UI
"creation_date": 2022-03-15 10:00:31, // UTC? - see existing DB // date timestamp without time zone
"creation_date": 2022-03-15 10:00:31, // UTC? - see existing DB // date timestamp without time zone (mutable)
"type": "image", // set of: text, image, audio, video, mixed
"type": "image", // set of: text, image, audio, video, mixed
"license": "SPDX-License-Identifier: CC-BY-4.0", // in frontend also show link to the license, which we should find in the SPDX database. If full copyright, we write "registrar claims full copyright, no license granted"
"license": "SPDX-License-Identifier: CC-BY-4.0", // in frontend also show link to the license, which we should find in the SPDX database. If full copyright, we write "registrar claims full copyright, no license granted"
"license_addons": "", //e.g. additional rights, free text
"license_addons": "", //e.g. additional rights, free text
...
@@ -27,7 +30,7 @@ fairregister works metadata
...
@@ -27,7 +30,7 @@ fairregister works metadata
"relation": " ", // also for collections
"relation": " ", // also for collections
"supersedes": " ", // new version of the work
"supersedes": " ", // new version of the work
"counter": "3156", // subsequent number of work, not sure if we still need that
"counter": "3156", // subsequent number of work, not sure if we still need that
"publishing_date":"2022-03-12", // date of broadcasting
"publishing_date":"2022-03-12", // date of broadcasting (mutable)
"grid": "RC-01-LIZ0000003156-2", // RC > FC / FR
"grid": "RC-01-LIZ0000003156-2", // RC > FC / FR
"public_certificate": "https://www.registeredcommons.org/document/1124800676.pdf", // if we generate some extra certificate, we put the URI here
"public_certificate": "https://www.registeredcommons.org/document/1124800676.pdf", // if we generate some extra certificate, we put the URI here
