diff --git a/examples/multipro/echo.go b/examples/multipro/echo.go
index 5392e8e9fe29acdd4db83f6d7b825915fcade3b8..60e83c50e13f4f6e7f11926ea3c1afe76fa36c63 100644
--- a/examples/multipro/echo.go
+++ b/examples/multipro/echo.go
@@ -45,8 +45,9 @@ func (e *EchoProtocol) onEchoRequest(s inet.Stream) {
 
 	log.Printf("%s: Received echo request from %s. Message: %s", s.Conn().LocalPeer(), s.Conn().RemotePeer(), data.Message)
 
-	// send response to sender
 	log.Printf("%s: Sending echo response to %s. Message id: %s...", s.Conn().LocalPeer(), s.Conn().RemotePeer(), data.MessageData.Id)
+
+	// send response to request send using the message string he provided
 	resp := &p2p.EchoResponse{
 		MessageData: NewMessageData(e.host.ID().String(), data.MessageData.Id, false),
 		Message:     data.Message}
@@ -85,7 +86,7 @@ func (e *EchoProtocol) onEchoResponse(s inet.Stream) {
 
 	assert.True(req.Message == data.Message, nil, "Expected echo to respond with request message")
 
-	log.Printf("%s: Received Echo response from %s. Message id:%s. Message: %s.", s.Conn().LocalPeer(), s.Conn().RemotePeer(), data.MessageData.Id, data.Message)
+	log.Printf("%s: Received echo response from %s. Message id:%s. Message: %s.", s.Conn().LocalPeer(), s.Conn().RemotePeer(), data.MessageData.Id, data.Message)
 	e.done <- true
 }
 
diff --git a/examples/multipro/main.go b/examples/multipro/main.go
index 53efce6cbf674720d037106f7e228edab6e66628..97218255da00eb9bd02760a7e3f88178ac3aa4dd 100644
--- a/examples/multipro/main.go
+++ b/examples/multipro/main.go
@@ -18,7 +18,7 @@ import (
 func makeRandomNode(port int, done chan bool) *Node {
 	// Ignoring most errors for brevity
 	// See echo example for more details and better implementation
-	priv, pub, _ := crypto.GenerateKeyPair(crypto.RSA, 2048)
+	priv, pub, _ := crypto.GenerateKeyPair(crypto.Secp256k1, 256)
 	pid, _ := peer.IDFromPublicKey(pub)
 	listen, _ := ma.NewMultiaddr(fmt.Sprintf("/ip4/127.0.0.1/tcp/%d", port))
 	peerStore := ps.NewPeerstore()
@@ -47,10 +47,10 @@ func main() {
 	log.Printf("This is a conversation between %s and %s\n", h1.host.ID(), h2.host.ID())
 
 	// send messages using the protocols
-	h1.pingProtocol.Ping(h2)
-	h2.pingProtocol.Ping(h1)
-	h1.echoProtocol.Echo(h2)
-	h2.echoProtocol.Echo(h1)
+	h1.Ping(h2)
+	h2.Ping(h1)
+	h1.Echo(h2)
+	h2.Echo(h1)
 
 	// block until all responses have been processed
 	for i := 0; i < 4; i++ {
diff --git a/examples/multipro/node.go b/examples/multipro/node.go
index 7892bfbb8b88061d8efd0bcd67c8fe295a081f5c..e490b5cb718ee451fa4705e24167fa3cfd14a6b0 100644
--- a/examples/multipro/node.go
+++ b/examples/multipro/node.go
@@ -44,14 +44,14 @@ func NewMessageData(nodeId string, messageId string, gossip bool) *p2p.MessageDa
 
 // Node type - implements one or more p2p protocols
 type Node struct {
-	host         host.Host     // lib-p2p host
-	pingProtocol *PingProtocol // ping protocol impl
-	echoProtocol *EchoProtocol // echo protocol impl
+	host          host.Host // lib-p2p host
+	*PingProtocol           // ping protocol impl
+	*EchoProtocol           // echo protocol impl
 }
 
 // create a new node with its implemented protocols
 func NewNode(host host.Host, done chan bool) *Node {
 	return &Node{host: host,
-		pingProtocol: NewPingProtocol(host, done),
-		echoProtocol: NewEchoProtocol(host, done)}
+		PingProtocol: NewPingProtocol(host, done),
+		EchoProtocol: NewEchoProtocol(host, done)}
 }
diff --git a/examples/multipro/pb/p2p.proto b/examples/multipro/pb/p2p.proto
index 62df22d29583104f3ab6c73d5e7e25bb090c4fdf..13d312546a7f04a4362d743055bd36e7ae01decb 100644
--- a/examples/multipro/pb/p2p.proto
+++ b/examples/multipro/pb/p2p.proto
@@ -10,7 +10,7 @@ message MessageData {
     string id = 3;        // allows requesters to use request data when processing a response
     bool gossip = 4;      // true to have receiver peer gossip the message to neighbors
     string nodeId = 5;    // id of node that created the message (not the peer that may have sent it)
-    string sign = 6;      // signature of message data + method specific data by message authoring node
+    bytes sign = 6;      // signature of message data + method specific data by message authoring node
 }
 
 //// ping protocol
diff --git a/examples/protocol-multiplexing-with-multicodecs/README.md b/examples/protocol-multiplexing-with-multicodecs/README.md
index 217933876d5784ce974a23b003373e2a9b5eabc4..0001f60bee31908560712d1c47cf676990c5094e 100644
--- a/examples/protocol-multiplexing-with-multicodecs/README.md
+++ b/examples/protocol-multiplexing-with-multicodecs/README.md
@@ -1,3 +1,4 @@
+
 # Protocol Multiplexing using multicodecs with libp2p
 
 This examples shows how to use multicodecs (i.e. json) to encode and transmit information between LibP2P hosts using LibP2P Streams.