diff --git a/internal/pow/generator.go b/internal/pow/challenge/generator.go
similarity index 98%
rename from internal/pow/generator.go
rename to internal/pow/challenge/generator.go
index 52bea82..bd07901 100644
--- a/internal/pow/generator.go
+++ b/internal/pow/challenge/generator.go
@@ -1,4 +1,4 @@
-package pow
+package challenge
 
 import (
 	"crypto/rand"
diff --git a/internal/pow/test_utils.go b/internal/pow/challenge/test_utils.go
similarity index 98%
rename from internal/pow/test_utils.go
rename to internal/pow/challenge/test_utils.go
index 1cbe69a..d33da98 100644
--- a/internal/pow/test_utils.go
+++ b/internal/pow/challenge/test_utils.go
@@ -1,4 +1,4 @@
-package pow
+package challenge
 
 import (
 	"crypto/rand"
diff --git a/internal/pow/types.go b/internal/pow/challenge/types.go
similarity index 99%
rename from internal/pow/types.go
rename to internal/pow/challenge/types.go
index 71f49d5..83b8298 100644
--- a/internal/pow/types.go
+++ b/internal/pow/challenge/types.go
@@ -1,4 +1,4 @@
-package pow
+package challenge
 
 import (
 	"crypto/hmac"
diff --git a/internal/pow/verifier.go b/internal/pow/challenge/verifier.go
similarity index 97%
rename from internal/pow/verifier.go
rename to internal/pow/challenge/verifier.go
index d9a2018..0942543 100644
--- a/internal/pow/verifier.go
+++ b/internal/pow/challenge/verifier.go
@@ -1,4 +1,4 @@
-package pow
+package challenge
 
 // Verifier handles validation of PoW challenges
 type Verifier struct {