diff --git a/protolib/util.proto b/protolib/util.proto
index ccd36444..c61bed78 100644
--- a/protolib/util.proto
+++ b/protolib/util.proto
@@ -76,6 +76,24 @@ message SymmetricKey {
 }
 
 
+message Offer
+{
+  enum OfferMode {
+    UNDEFINED = 0;
+    FOREVER_ACCESS = 1;
+  }
+  OfferMode offer_mode = 10;
+  string offer_id = 11;
+  map<string, OfferCurrency> offer_price = 12;
+
+}
+
+message OfferCurrency
+{
+  double price = 1;
+  string address = 2;
+}
+
 // To be stuffed in extra field of transaction
 message OfferAcceptance {
   bytes offer_id = 1; // Identifier of the offer accepted
@@ -89,3 +107,4 @@ message OfferAcceptance {
   bytes refund_addr_spec_hash = 5;
 }
 
+