Add arXiv reference and BibTeX

README.md

@@ -22,7 +22,8 @@ configs:
 Daily snapshots of the Lightning Network (LN) collected from gossip messages
 between **2022-06-09** and **2024-10-14**. Used in the paper *Predicting
 Channel Closures in the Lightning Network with Machine Learning* (Antonelli
-et al., 2026, under review) and consumed by the
+et al., 2026; [arXiv:2605.12759](https://arxiv.org/abs/2605.12759)) and
+consumed by the
 [ln-channel-closure-prediction](https://github.com/AmbossTech/ln-channel-closure-prediction)
 codebase.
 
@@ -63,4 +64,14 @@ public by design.
 
 ## Citation
 
-A BibTeX entry will be added once the paper is published.
+```bibtex
+@misc{antonelli2026predicting,
+  title={Predicting Channel Closures in the Lightning Network with Machine Learning},
+  author={Simone Antonelli and Vincent Davis and Harrison Rush and Anthony Potdevin and Jesse Shrader and Vikash Singh and Emanuele Rossi},
+  year={2026},
+  eprint={2605.12759},
+  archivePrefix={arXiv},
+  primaryClass={cs.LG},
+  url={https://arxiv.org/abs/2605.12759}
+}
+```