From 9be287ced19d7107a80dbe33963799acb52e3158 Mon Sep 17 00:00:00 2001
From: mossid <torecursedivine@gmail.com>
Date: Mon, 12 Mar 2018 17:17:42 +0100
Subject: [PATCH] add ibc2.md

---
 docs/spec/ibc/ibc2.md | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 docs/spec/ibc/ibc2.md

diff --git a/docs/spec/ibc/ibc2.md b/docs/spec/ibc/ibc2.md
new file mode 100644
index 0000000000..215600e7b1
--- /dev/null
+++ b/docs/spec/ibc/ibc2.md
@@ -0,0 +1,31 @@
+# IBC Spec
+
+## MVP2
+
+`IBCUpdate` is added, making it able to prove the header.
+
+### IBC Module
+
+```golang
+type IBCOutMsg struct {
+  IBCTransfer
+}
+
+type IBCInMsg struct {
+  IBCTransfer
+  Proof           merkle.IAVLProof
+  FromChainID     string
+  FromChainHeight uint64
+}
+
+// update sync state of other blockchain
+type IBCUpdateMsg struct {
+  Header tm.Header
+  Commit tm.Commit
+}
+
+type IBCTransfer struct {
+  Destination sdk.Address
+  Coins       sdk.Coins
+}
+```