Shell: export Signature.Public_key_hash.zero

src/lib_crypto/s.ml

@@ -164,6 +164,8 @@ module type SIGNATURE = sig
     include ENCODER with type t := t
     include INDEXES with type t := t
 
+    val zero: t
+
   end
 
   module Public_key : sig

src/lib_crypto/signature.ml

@@ -59,6 +59,8 @@ module Public_key_hash = struct
 
   let size = 1 + Ed25519.size
 
+  let zero = Ed25519 Ed25519.Public_key_hash.zero
+
   include Helpers.MakeRaw(struct
       type nonrec t = t
       let name = name

src/lib_protocol_environment/sigs/v1/s.mli

@@ -217,6 +217,8 @@ module type SIGNATURE = sig
     include ENCODER with type t := t
     include INDEXES with type t := t
 
+    val zero: t
+
   end
 
   module Public_key : sig

src/lib_protocol_environment/tezos_protocol_environment.ml

@@ -285,6 +285,8 @@ module Make (Context : CONTEXT) = struct
           include ENCODER with type t := t
           include INDEXES with type t := t
 
+          val zero: t
+
         end
 
         module Public_key : sig