Add Zenodo DOI 10.5281/zenodo.22115768 to citation

README.md

@@ -76,10 +76,16 @@ research, prototyping, and evaluation only.
 
 ## Citation
 
+Please cite the archived, DOI-minted version on Zenodo:
+
 ```
-ProofAML — https://proofaml.com — "ProofAML Sanctions Snapshot 2026-08-24"
+ProofAML. (2026). ProofAML Sanctions & PEP Watchlist Snapshot
+(Version 2026-08-24) [Data set]. Zenodo.
+https://doi.org/10.5281/zenodo.22115768
 ```
 
+**DOI:** [10.5281/zenodo.22115768](https://doi.org/10.5281/zenodo.22115768)
+
 ## Files
 
 - `data/<id>.snapshot.jsonl.gz` — one gzipped JSONL file per included