diff --git a/README.md b/README.md
index ffc204f..88a7116 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,12 @@ See [https://milksad.info](https://milksad.info) and [https://milksad.info/updat
 
 This repository is a work-in-progress and relative paths will likely change. Expect links to specific sub-folders and files to break over time.
 
+### Data Accuracy
+
+Unless explicitly specified otherwise, every cryptocurrency address in this repository was derived from a weak wallet key. As such, this collection is designed to be a reliable basis on which to flag addresses and transactions to/from weak addresses.
+
+Due to bloom filter mechanics, there may be a few addresses included here which _are_ from weak wallets, but _do not_ have a known on-chain usage. This should not be a problem for practical applications.
+
 ### License
 
 This repository does not have an official copyright license yet.