"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"
"description": "A mountain landscape in Austria",
"attribution": "LisK & Kira", // was field "contributors", to be used e.g. for giving attribution in CC license
"publisher": "self",
"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
"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_addons": "", //e.g. additional rights, free text
"identifier": "", //e.g. ISBN number
"other_license": "Pixabay publishers", // ask Pixabay to obtain a license, or add a dual license (free text)
"IPFS": " ", // ipfs URI
"NFT": " ", // NFT-UID, URI to data in ipfs
"filename": " ",
"hash": " ", // md5, we do not use that anymore
"hash_sha": " ", // sha256
"hash_sha512": " ", // NEW sha512
"revocation_date": " ", // additionally generate new hash? chain independent of the entries? design? java microservice revocation
"revocation_reason": "", // revocation of a registration only under special circumstances e.g. proof of copyright infringement
"registration_date": " ", // timestamp without time zone
"tags": " ",
"relation": " ", // also for collections
"supersedes": " ", // new version of the work
"counter": "3156", // subsequent number of work, not sure if we still need that
"publishing_date":"2022-03-12", // date of broadcasting
"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
"language": "DE_de", // ISO ?? check DB
"visibility": "yes", // work is public
"customkey0": "2022-02-12", // date of archiving, specific to a user / type of work: audio > duration
"customkey1": "", // free selectable attributes, sub-record in the DB, second table, attributes-array (Jasper)
