diff --git a/Block Records.go b/Block Records.go
index 1033184..32c0cdf 100644
--- a/Block Records.go	
+++ b/Block Records.go	
@@ -380,6 +380,8 @@ const (
 	ProfileFieldAddress = 5 // Physical address
 )
 
+// BlockRecordProfileBlob is similar to BlockRecordProfileField but contains binary objects instead of text.
+// It can be used for example to store a profile picture on the blockchain.
 type BlockRecordProfileBlob struct {
 	Type uint16 // See ProfileBlobX constants.
 	Data []byte // The data
diff --git a/Blockchain.go b/Blockchain.go
index 9b282b7..b80ae3a 100644
--- a/Blockchain.go
+++ b/Blockchain.go
@@ -71,6 +71,8 @@ func initUserBlockchain() {
 		// First run: create header signature!
 		userBlockchainHeader.height = 0
 		userBlockchainHeader.version = 0
+		userBlockchainHeader.publicKey = peerPublicKey
+
 		if err := blockchainHeaderWrite(userBlockchainDB, peerPrivateKey, userBlockchainHeader.height, userBlockchainHeader.version); err != nil {
 			Filters.LogError("initUserBlockchain", "initializing user blockchain: %s", err.Error())
 			os.Exit(1)