From 836f3914760cc47fcb92ee242b64a0c8a189f8ce Mon Sep 17 00:00:00 2001
From: Edwin <edwin@am.is>
Date: Mon, 26 Jun 2017 15:24:42 +0800
Subject: [PATCH] prints vanity under decode command

---
 README.md           | 1 +
 cmd/istanbul/cmd.go | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/README.md b/README.md
index c4b58f05..24227f69 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,7 @@ Decode extraData for the given input
 $ build/bin/istanbul decode --extradata 0x0000000000000000000000000000000000000000000000000000000000000000f89af85494475cc98b5521ab2a1335683e7567c8048bfe79ed9407d8299de61faed3686ba4c4e6c3b9083d7e2371944fe035ce99af680d89e2c4d73aca01dbfc1bd2fd94dc421209441a754f79c4a4ecd2b49c935aad0312b8410000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000c0
 
 OUTPUT:
+vanity:  0x0000000000000000000000000000000000000000000000000000000000000000
 validator:  0x475cc98b5521ab2a1335683e7567c8048bfe79ed
 validator:  0x07d8299de61faed3686ba4c4e6c3b9083d7e2371
 validator:  0x4fe035ce99af680d89e2c4d73aca01dbfc1bd2fd
diff --git a/cmd/istanbul/cmd.go b/cmd/istanbul/cmd.go
index ec8a1346..d0b21841 100644
--- a/cmd/istanbul/cmd.go
+++ b/cmd/istanbul/cmd.go
@@ -125,6 +125,9 @@ func decodeExtraData(extraData string) error {
 	if err != nil {
 		return err
 	}
+
+	fmt.Println("vanity: ", "0x"+common.Bytes2Hex(extra[:atypes.IstanbulExtraVanity]))
+
 	for _, v := range istanbulExtra.Validators {
 		fmt.Println("validator: ", v.Hex())
 	}