diff --git a/app/config.go b/app/config.go
index 76e4de5..5b4555d 100644
--- a/app/config.go
+++ b/app/config.go
@@ -1,13 +1,26 @@
 package app
 
+import (
+	"cmp"
+	"os"
+)
+
 type EVMOptionsFn func(uint64) error
 
+// AccountAddressPrefix (the Bech32 account prefix) and BaseDenom (the EVM / CBDC
+// base denomination) are deployment-specific, so the same binary can serve any
+// deployment. They are read from the environment at process start and fall back
+// to the Ethermint-conventional defaults when unset (tests, local runs):
+//
+//	CHAIN_PREFIX=hnl   CHAIN_DENOM=hnl   // HNL CBDC production
+var (
+	AccountAddressPrefix = cmp.Or(os.Getenv("CHAIN_PREFIX"), "ethm")
+	BaseDenom            = cmp.Or(os.Getenv("CHAIN_DENOM"), "acbdc")
+)
+
 const (
-	AccountAddressPrefix = "ethm"
-	Bip44CoinType        = 60
-	Name                 = "cbdc"
-	// BaseDenom defines to the default denomination used in EVM
-	BaseDenom                  = "acbdc"
+	Bip44CoinType              = 60
+	Name                       = "cbdc"
 	Denom                      = "CBDC"
 	DenomDescription           = "CBDC is the digital central bank currency."
 	DenomName                  = "CBDC"