Introducign MixDigest and SeedHash

pow/block.go

@@ -5,6 +5,6 @@ import "math/big"
 type Block interface {
 	Difficulty() *big.Int
 	HashNoNonce() []byte
-	N() []byte
+	Nonce() []byte
 	Number() *big.Int
 }

pow/ezp/pow.go

@@ -96,5 +96,5 @@ func verify(hash []byte, diff *big.Int, nonce []byte) bool {
 }
 
 func Verify(block pow.Block) bool {
-	return verify(block.HashNoNonce(), block.Difficulty(), block.N())
+	return verify(block.HashNoNonce(), block.Difficulty(), block.Nonce())
 }