| Wikidata property for authority control | Q18614948 |
| P1793 | format as a regular expression | [0-9A-Za-z\.\-]{3,36}[+]? |
| P2264 | Mix'n'match catalog ID | 5764 |
| P3254 | property proposal discussion | https://www.wikidata.org/wiki/Wikidata:Property_proposal/Archive/44#P2479 |
| P1896 | source website for the property | https://spdx.org/licenses |
| P8966 | URL match pattern | ^https?:\/\/spdx\.org\/licenses\/([0-9A-Za-z\.\-]{3,36}[+]?)(\.html)? |
| P9073 | applicable 'stated in' value | Mix'n'match | Q28054658 |
| P2429 | expected completeness | eventually complete | Q21873974 |
| P1630 | formatter URL | https://spdx.org/licenses/$1.html | |
| P4876 | number of records | 474 | |
| P2302 | property constraint | distinct-values constraint | Q21502410 |
| subject type constraint | Q21503250 | ||
| format constraint | Q21502404 | ||
| property scope constraint | Q53869507 | ||
| allowed-entity-types constraint | Q52004125 | ||
| single-best-value constraint | Q52060874 | ||
| P2668 | stability of property value | never changes | Q23611288 |
| P1629 | Wikidata item of this property | SPDX License List | Q56423180 |
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