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docs/docs/building-apps/03-protobuf-annotations.md

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 # ProtocolBuffer Annotations
 
 This document explains the various protobuf scalars that have been added to make working with protobuf easier for Cosmos SDK application developers
+
+## Scalars
+
+(cosmos_proto.scalar) = "cosmos.AddressString";
+
+## Interfaces
+
+option (cosmos_proto.implements_interface) = "cosmos.auth.v1beta1.AccountI";
+
+## Amino
+
+### Name
+
+option (amino.name) = "cosmos-sdk/BaseAccount";
+
+### Field Name
+
+(amino.field_name) = "public_key"
+
+### Dont_OmitEmpty 
+
+(amino.dont_omitempty)   = true,
+
+### Encoding 
+
+(amino.encoding)         = "legacy_coins",