diff --git a/src/api.ml b/src/api.ml
index 96118999..f2fbf58e 100644
--- a/src/api.ml
+++ b/src/api.ml
@@ -316,3 +316,27 @@ module MasterSignatures = struct
     |> mem "signkey_sigs" (Jsont.list SignKeySignature.jsont) ~enc:signkey_sigs
     |> finish
 end
+
+module DenomRevocationSignature = struct
+  type t = { master_sig: MasterDenominationKeyRevocationPS.t }
+
+  let jsont =
+    let make master_sig = { master_sig } in
+    let enc v = v.master_sig in
+    let open Jsont.Object in
+    map ~kind:"DenomRevocationSignature" make
+    |> mem "master_sig" MasterDenominationKeyRevocationPS.jsont ~enc
+    |> finish
+end
+
+module SignkeyRevocationSignature = struct
+  type t = { master_sig: MasterSigningKeyRevocationPS.t }
+
+  let jsont =
+    let make master_sig = { master_sig } in
+    let enc v = v.master_sig in
+    let open Jsont.Object in
+    map ~kind:"SignkeyRevocationSignature" make
+    |> mem "master_sig" MasterSigningKeyRevocationPS.jsont ~enc
+    |> finish
+end
diff --git a/src/bin_signature.ml b/src/bin_signature.ml
index e6b3690a..76b6bc2b 100644
--- a/src/bin_signature.ml
+++ b/src/bin_signature.ml
@@ -207,6 +207,44 @@ module ExchangeSigningKeyValidityPS = struct
   include MK (R)
 end
 
+module MasterDenominationKeyRevocationPS = struct
+  module R = struct
+    (* purpose.purpose = TALER_SIGNATURE_MASTER_DENOMINATION_KEY_REVOKED. *)
+    type r = { h_denom_pub: DenominationHash.t }
+
+    let bin =
+      let open Bin in
+      Purpose.make_bin Taler_signatures.master_denomination_key_revoked
+      @@ fun purpose ->
+      record (fun _purpose h_denom_pub -> { h_denom_pub })
+      |+ Purpose.field purpose
+      |+ field DenominationHash.bin (fun t -> t.h_denom_pub)
+      |> sealr
+  end
+
+  include R
+  include MK (R)
+end
+
+module MasterSigningKeyRevocationPS = struct
+  module R = struct
+    (* purpose.purpose = TALER_SIGNATURE_MASTER_SIGNING_KEY_REVOKED *)
+    type r = { exchange_pub: ExchangePublicKeyP.t }
+
+    let bin =
+      let open Bin in
+      Purpose.make_bin Taler_signatures.master_signing_key_revoked
+      @@ fun purpose ->
+      record (fun _purpose exchange_pub -> { exchange_pub })
+      |+ Purpose.field purpose
+      |+ field ExchangePublicKeyP.bin (fun t -> t.exchange_pub)
+      |> sealr
+  end
+
+  include R
+  include MK (R)
+end
+
 (* ### BIN IMPL END ### *)
 
 module WithdrawRequestPS = struct
@@ -711,16 +749,6 @@ module CoinPurseRefundConfirmationPS = struct
   }
 end
 
-module MasterDenominationKeyRevocationPS = struct
-  (* purpose.purpose = TALER_SIGNATURE_MASTER_DENOMINATION_KEY_REVOKED *)
-  type t = { h_denom_pub: DenominationHash.t }
-end
-
-module MasterSigningKeyRevocationPS = struct
-  (* purpose.purpose = TALER_SIGNATURE_MASTER_SIGNING_KEY_REVOKED *)
-  type t = { exchange_pub: ExchangePublicKeyP.t }
-end
-
 module MasterAddAuditorPS = struct
   (* purpose.purpose = TALER_SIGNATURE_MASTER_ADD_AUDITOR *)
   type t = {