Added citation to preprint

README.md

@@ -226,10 +226,14 @@ for entry in feed.entries[:5]:  # Process first 5 entries
 If you use LedgerBERT-Market-Sentiment in your research, please cite:
 
 ```bibtex
-@article{hernandez2025dlt-corpus,
-  title={DLT-Corpus: A Large-Scale Text Collection for the Distributed Ledger Technology Domain},
-  author={Hernandez Cruz, Walter and Devine, Peter and Vadgama, Nikhil and Tasca, Paolo and Xu, Jiahua},
-  year={2025}
+@misc{hernandez2026dlt-corpus,
+      title={DLT-Corpus: A Large-Scale Text Collection for the Distributed Ledger Technology Domain}, 
+      author={Walter Hernandez Cruz and Peter Devine and Nikhil Vadgama and Paolo Tasca and Jiahua Xu},
+      year={2026},
+      eprint={2602.22045},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL},
+      url={https://arxiv.org/abs/2602.22045}, 
 }
 ```