diff --git a/profile/README.md b/profile/README.md
index d31ff9e..4495b07 100644
--- a/profile/README.md
+++ b/profile/README.md
@@ -50,13 +50,40 @@ down with real confidence.
The metrics are approximations built from published research, not medical-grade
measurements. Nothing here is a diagnosis.
-### Support the work
+### The people who built it
-This is free, MIT-licensed, and has nothing behind it. If it gave your band a second life
-and you want to chip in:
+
+
+
-- **BTC** — `bc1qvtcch38dcwp967ar764uu6eetw7tf907844wfq`
-- **EVM** (ETH / Base / Arbitrum / Polygon) — `0x8310C89393366b7eBCD47ABa82e1dfB5ECeFFbD9`
+Mostly by wearing it on a real wrist and reporting what came out wrong — which is
+genuinely the most useful thing anyone can do here, since there's one person's
+physiology in the test data otherwise.
+
+---
+
+