diff --git a/blockchains/bitcoin/README.md b/blockchains/bitcoin/README.md
index 457e5c0..c8408b1 100644
--- a/blockchains/bitcoin/README.md
+++ b/blockchains/bitcoin/README.md
@@ -3,3 +3,4 @@
 <br>
 
 * **[scaling bitcoin for mass use, by e. ben-sasson](https://starkware.co/blog/scaling-bitcoin-for-mass-use/)**
+* **[bitcoin wildlife researching bitcoin scaling with OP_CAT](https://docs.btcwild.life/)**