Update README.md

README.md

@@ -8,6 +8,8 @@ size_categories:
 - 10K<n<100K
 source_datasets:
 - extended
+license: 
+- cc-by-4.0
 tags:
 - text
 - pii
@@ -314,11 +316,11 @@ The canonical representation is model-agnostic and can be converted for architec
 
 ## License
 
-MultiPII-X incorporates transformed material from several upstream resources.
+MultiPII-X is released under the **Creative Commons Attribution 4.0 International (CC BY 4.0)** license.
 
-A repository-level license should only be added after confirming that it is compatible with the redistribution terms of every included source. The original resources retain their respective attribution and licensing requirements.
+Users may share and adapt the dataset, including for commercial use, provided appropriate attribution is given and changes are indicated.
 
-See the upstream resources above and `CITATION.cff` for provenance.
+Upstream source datasets and corpora retain their own attribution requirements. See `CITATION.cff` for provenance and source citations.
 
 ## Citation