From 5347d890c4dca651500d6bdc31d4ae5d4ea20440 Mon Sep 17 00:00:00 2001
From: Adam Soltys <adam@coinos.io>
Date: Wed, 11 Mar 2026 23:51:53 -0700
Subject: tx recalc

---
 lib/cpfp.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/cpfp.ts')

diff --git a/lib/cpfp.ts b/lib/cpfp.ts
index 20171acc..cb1bbcbf 100644
--- a/lib/cpfp.ts
+++ b/lib/cpfp.ts
@@ -293,7 +293,7 @@ export async function buildCpfpSend({
     "payments:", paymentOutputs.length);
 
   // Calculate User B's bump reserve for this child
-  const fastestFee = Math.ceil(fees.fastestFee * 1.5);
+  const fastestFee = Math.max(Math.ceil(fees.fastestFee * 1.5), 4);
   const childBumpReserve = calculateBumpReserve(feeRate, fastestFee, decoded.vsize);
 
   return {
-- 
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