diff --git a/src/proto_alpha/bin_sc_rollup_node/arith_pvm.ml b/src/proto_alpha/bin_sc_rollup_node/arith_pvm.ml
index 1e71b6292e2653cb27074e74d1ac339dc36d7c0e..099a7373e30b4fc8904a36e279358f2d3bc1bab0 100644
--- a/src/proto_alpha/bin_sc_rollup_node/arith_pvm.ml
+++ b/src/proto_alpha/bin_sc_rollup_node/arith_pvm.ml
@@ -36,8 +36,8 @@ module Arith_proof_format = struct
 
   type proof = IStoreProof.Proof.tree IStoreProof.Proof.t
 
-  let context_hash_to_state_hash h =
-    Sc_rollup.State_hash.hash_bytes [Context_hash.to_bytes h]
+  let context_hash_to_state_hash =
+    Sc_rollup.State_hash.context_hash_to_state_hash
 
   let hash_tree tree = context_hash_to_state_hash (IStoreTree.hash tree)
 
diff --git a/src/proto_alpha/bin_sc_rollup_node/wasm_2_0_0_pvm.ml b/src/proto_alpha/bin_sc_rollup_node/wasm_2_0_0_pvm.ml
index 9bb1a26c3050ae64968321f248ea0d949864319b..71fb3fd6a9221878b30e8a63b286f522cf202b3b 100644
--- a/src/proto_alpha/bin_sc_rollup_node/wasm_2_0_0_pvm.ml
+++ b/src/proto_alpha/bin_sc_rollup_node/wasm_2_0_0_pvm.ml
@@ -59,7 +59,7 @@ module Wasm_2_0_0_proof_format = struct
   let kinded_hash_to_state_hash :
       IStoreProof.Proof.kinded_hash -> Sc_rollup.State_hash.t = function
     | `Value hash | `Node hash ->
-        Sc_rollup.State_hash.hash_bytes [Context_hash.to_bytes hash]
+        Sc_rollup.State_hash.context_hash_to_state_hash hash
 
   let proof_before proof =
     kinded_hash_to_state_hash proof.IStoreProof.Proof.before
diff --git a/src/proto_alpha/lib_protocol/alpha_context.mli b/src/proto_alpha/lib_protocol/alpha_context.mli
index a66eec891f4523c102d2238613d33865e19e6b81..c43ea5dd8d27cd18407c4ebde422ba38e4496572 100644
--- a/src/proto_alpha/lib_protocol/alpha_context.mli
+++ b/src/proto_alpha/lib_protocol/alpha_context.mli
@@ -2768,6 +2768,12 @@ module Sc_rollup : sig
     include S.HASH
 
     val context_hash_to_state_hash : Context_hash.t -> t
+
+    type unreachable = |
+
+    val hash_bytes : unreachable -> t
+
+    val hash_string : unreachable -> t
   end
 
   module Inbox : sig
diff --git a/src/proto_alpha/lib_protocol/sc_rollup_repr.ml b/src/proto_alpha/lib_protocol/sc_rollup_repr.ml
index 54d93a6b21b668b315fe1b0ab8fd0f5bd9f53ad4..3181cbfd570ae61e3ab909ac8fb00da208178179 100644
--- a/src/proto_alpha/lib_protocol/sc_rollup_repr.ml
+++ b/src/proto_alpha/lib_protocol/sc_rollup_repr.ml
@@ -110,7 +110,20 @@ module State_hash = struct
 
   include Path_encoding.Make_hex (H)
 
-  let context_hash_to_state_hash h = hash_bytes [Context_hash.to_bytes h]
+  let context_hash_to_state_hash =
+    (* Both State_hash and Context_hash's hashes are supposed to have the
+       same size. This top-level check enforces this invariant, in which case,
+       no exception could be thrown by [of_bytes_exn] below *)
+    let () = assert (Compare.Int.equal size Context_hash.size) in
+    fun h -> of_bytes_exn @@ Context_hash.to_bytes h
+
+  (* Hackish way to disable hash_bytes and hash_string to force people to use
+     context_hash_to_state_hash (without changing content of HASH.S) *)
+  type unreachable = |
+
+  let hash_bytes = function (_ : unreachable) -> .
+
+  let hash_string = function (_ : unreachable) -> .
 end
 
 type t = Address.t
diff --git a/src/proto_alpha/lib_protocol/sc_rollup_repr.mli b/src/proto_alpha/lib_protocol/sc_rollup_repr.mli
index 602a6255d5e36697973a76566ce7aadb85134bac..88722d89d342e77b9dd347648bf60c26ee45d105 100644
--- a/src/proto_alpha/lib_protocol/sc_rollup_repr.mli
+++ b/src/proto_alpha/lib_protocol/sc_rollup_repr.mli
@@ -67,6 +67,14 @@ module State_hash : sig
   (** [context_hash_to_state_hash ch] turns an (Irmin) context hash
       into a state hash. *)
   val context_hash_to_state_hash : Context_hash.t -> t
+
+  (* Hackish way to disable hash_bytes and hash_string to force people to use
+     context_hash_to_state_hash (without changing content of HASH.S) *)
+  type unreachable = |
+
+  val hash_bytes : unreachable -> t
+
+  val hash_string : unreachable -> t
 end
 
 (** Number of messages consumed by a single commitment. This represents a claim
diff --git a/src/proto_alpha/lib_protocol/sc_rollup_wasm.ml b/src/proto_alpha/lib_protocol/sc_rollup_wasm.ml
index bf20e218d3423ed389a76834386479f259a2e098..18b844d3df65831757ad16c1d91bb7dece2cf1bf 100644
--- a/src/proto_alpha/lib_protocol/sc_rollup_wasm.ml
+++ b/src/proto_alpha/lib_protocol/sc_rollup_wasm.ml
@@ -188,8 +188,7 @@ module V2_0_0 = struct
 
     let state_hash state =
       let m =
-        Context_hash.to_bytes @@ Tree.hash state |> fun h ->
-        return @@ State_hash.hash_bytes [h]
+        return @@ State_hash.context_hash_to_state_hash (Tree.hash state)
       in
       let open Lwt_syntax in
       let* state = Monad.run m state in
@@ -405,8 +404,7 @@ module V2_0_0 = struct
       Lwt.return None
 
     let kinded_hash_to_state_hash = function
-      | `Value hash | `Node hash ->
-          State_hash.hash_bytes [Context_hash.to_bytes hash]
+      | `Value hash | `Node hash -> State_hash.context_hash_to_state_hash hash
 
     let proof_before proof =
       kinded_hash_to_state_hash proof.Context.Proof.before
diff --git a/src/proto_alpha/lib_protocol/test/integration/test_sc_rollup_wasm.ml b/src/proto_alpha/lib_protocol/test/integration/test_sc_rollup_wasm.ml
index 0a31ad4390d62d620a6884e2c9725e77a5eaf8fa..31a3c14115dbe349bf4ac3f0ff4ddd5edb07440e 100644
--- a/src/proto_alpha/lib_protocol/test/integration/test_sc_rollup_wasm.ml
+++ b/src/proto_alpha/lib_protocol/test/integration/test_sc_rollup_wasm.ml
@@ -73,7 +73,7 @@ module WASM_P :
   let kinded_hash_to_state_hash :
       Context_binary.Proof.kinded_hash -> Sc_rollup.State_hash.t = function
     | `Value hash | `Node hash ->
-        Sc_rollup.State_hash.hash_bytes [Context_hash.to_bytes hash]
+        Sc_rollup.State_hash.context_hash_to_state_hash hash
 
   let proof_before proof =
     kinded_hash_to_state_hash proof.Context_binary.Proof.before
diff --git a/src/proto_alpha/lib_protocol/test/pbt/test_refutation_game.ml b/src/proto_alpha/lib_protocol/test/pbt/test_refutation_game.ml
index 48fbc6dd037b53625fb0c1fb859eedc2b3b67e20..bcb575863737ca3bf9bf500dcc81313d09c7384e 100644
--- a/src/proto_alpha/lib_protocol/test/pbt/test_refutation_game.ml
+++ b/src/proto_alpha/lib_protocol/test/pbt/test_refutation_game.ml
@@ -230,7 +230,10 @@ end) : TestPVM with type state = int = struct
 
   let proof_input_requested _ = No_input_required
 
-  let state_hash (x : state) = return (State_hash.hash_string [Int.to_string x])
+  let state_hash (x : state) =
+    return
+      (State_hash.context_hash_to_state_hash
+      @@ Context_hash.hash_string [Int.to_string x])
 
   let is_input_state x =
     if x >= P.target then return Initial else return No_input_required
@@ -307,7 +310,9 @@ end) : TestPVM with type state = string * int list = struct
 
   let proof_input_requested _ = No_input_required
 
-  let state_hash (x : state) = return @@ State_hash.hash_string [to_string x]
+  let state_hash (x : state) =
+    return @@ State_hash.context_hash_to_state_hash
+    @@ Context_hash.hash_string [to_string x]
 
   let initial_state _ _ = return ("hello", P.initial_prog)
 
diff --git a/src/proto_alpha/lib_protocol/test/unit/test_sc_rollup_game.ml b/src/proto_alpha/lib_protocol/test/unit/test_sc_rollup_game.ml
index f202a5f6a04f0573a03b0bc628311038a83fe11e..5964f92fc9c761a0cb6e1774b20b16ad80600095 100644
--- a/src/proto_alpha/lib_protocol/test/unit/test_sc_rollup_game.ml
+++ b/src/proto_alpha/lib_protocol/test/unit/test_sc_rollup_game.ml
@@ -59,7 +59,13 @@ let check_reason ~loc (outcome : Sc_rollup_game_repr.outcome option) s =
 let tick_of_int_exn n =
   match Tick.of_int n with None -> assert false | Some t -> t
 
-let hash_int n = Sc_rollup_repr.State_hash.hash_string [Format.sprintf "%d" n]
+let context_hash_of_string s = Context_hash.hash_string [s]
+
+let hash_string s =
+  Sc_rollup_repr.State_hash.context_hash_to_state_hash
+  @@ context_hash_of_string s
+
+let hash_int n = hash_string (Format.sprintf "%d" n)
 
 let init_dissection ?(size = 32) ?init_tick start_hash =
   let default_init_tick i =
@@ -88,9 +94,9 @@ let two_stakers_in_conflict () =
   let* ctxt, rollup, refuter, defender =
     T.originate_rollup_and_deposit_with_two_stakers ()
   in
-  let hash1 = Sc_rollup_repr.State_hash.hash_string ["foo"] in
-  let hash2 = Sc_rollup_repr.State_hash.hash_string ["bar"] in
-  let hash3 = Sc_rollup_repr.State_hash.hash_string ["xyz"] in
+  let hash1 = hash_string "foo" in
+  let hash2 = hash_string "bar" in
+  let hash3 = hash_string "xyz" in
   let parent_commit =
     Commitment_repr.
       {
@@ -145,7 +151,7 @@ let two_stakers_in_conflict () =
     may not be more than half of the total tick-duration. *)
 let test_poorly_distributed_dissection () =
   let* ctxt, rollup, refuter, defender = two_stakers_in_conflict () in
-  let start_hash = Sc_rollup_repr.State_hash.hash_string ["foo"] in
+  let start_hash = hash_string "foo" in
   let init_tick size i =
     if i = size - 1 then (None, tick_of_int_exn 10000)
     else (Some (if i = 0 then start_hash else hash_int i), tick_of_int_exn i)
@@ -165,7 +171,7 @@ let test_poorly_distributed_dissection () =
 
 let test_single_valid_game_move () =
   let* ctxt, rollup, refuter, defender = two_stakers_in_conflict () in
-  let start_hash = Sc_rollup_repr.State_hash.hash_string ["foo"] in
+  let start_hash = hash_string "foo" in
   let dissection =
     Stdlib.List.init 32 (fun i ->
         if i = 0 then (Some start_hash, tick_of_int_exn 0)
@@ -214,10 +220,10 @@ let staker_injectivity_gen ~refuter2_plays =
        * [commit2]: published by [defender];
        * [commit3]: published by [refuter1];
        * [commit4]: published by [refuter2]. *)
-    let hash1 = Sc_rollup_repr.State_hash.hash_string ["foo"] in
-    let hash2 = Sc_rollup_repr.State_hash.hash_string ["bar"] in
-    let hash3 = Sc_rollup_repr.State_hash.hash_string ["xyz"] in
-    let hash4 = Sc_rollup_repr.State_hash.hash_string ["abc"] in
+    let hash1 = hash_string "foo" in
+    let hash2 = hash_string "bar" in
+    let hash3 = hash_string "xyz" in
+    let hash4 = hash_string "abc" in
     let refutation = init_refutation hash1 in
     let commit1 =
       Commitment_repr.
diff --git a/tezt/tests/expected/sc_rollup.ml/Alpha- ensure boot sector is used.out b/tezt/tests/expected/sc_rollup.ml/Alpha- ensure boot sector is used.out
index fbe640976e9fe774d65b96a2770586b2f2bee056..67eca71bacbcd8c096e5f0faaa3b375347574832 100644
--- a/tezt/tests/expected/sc_rollup.ml/Alpha- ensure boot sector is used.out	
+++ b/tezt/tests/expected/sc_rollup.ml/Alpha- ensure boot sector is used.out	
@@ -72,7 +72,7 @@ This sequence of operations was run:
 
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs11s5nfonT2qW9aBhmo3pv3oUiG9X35qDNkSUxQNFANSZUrrAvX8"
+"scs11h9A7VAzxxEkEW6ufnfbPnu717o4mc6hagzqvPLhLvHcXyRQVA"
 
 ./tezos-client --wait none originate sc rollup from '[PUBLIC_KEY_HASH]' of kind arith of type unit booting with 31 --burn-cap 9999999
 Node is bootstrapped.
@@ -147,4 +147,4 @@ This sequence of operations was run:
 
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs12mzqZwgkUZNNSQZk6HQ1sN8VubcgPHMHNj1ARrpYnc2oLpo5SC"
+"scs11zAjtdXYn7FZqG98exo3UKpcF7NcXSDXdGDZX8mvyoeVUNx7U8"
diff --git a/tezt/tests/expected/sc_rollup.ml/Alpha- node advances PVM state with messages.out b/tezt/tests/expected/sc_rollup.ml/Alpha- node advances PVM state with messages.out
index a07527c98a030d5a4e248e87428e21e25817a380..100a5555155379176b938ffcd1b78263154cbb2b 100644
--- a/tezt/tests/expected/sc_rollup.ml/Alpha- node advances PVM state with messages.out	
+++ b/tezt/tests/expected/sc_rollup.ml/Alpha- node advances PVM state with messages.out	
@@ -81,13 +81,13 @@ This sequence of operations was run:
 "\000\000\000\007"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs12jce3k85ri49csMc1uPnWpsTWd2KnDam9se9beyQtf6NSgDqPV"
+"scs11brdXnUqwwkqChBy8JsHPVzsS3b6YU9i1PpLczV3tCSnjkTYd1"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "19"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs12jce3k85ri49csMc1uPnWpsTWd2KnDam9se9beyQtf6NSgDqPV"
+"scs11brdXnUqwwkqChBy8JsHPVzsS3b6YU9i1PpLczV3tCSnjkTYd1"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "19"
@@ -136,13 +136,13 @@ This sequence of operations was run:
 "\000\000\000\n"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs11kdKF4R7zerdddo9p7Ky5CzHKXebFF8cPo9VK9pvnrvXRTVXZy"
+"scs12Tgfr71PpKXJqDp8yXnohfSYoTT57KeRMEi1YacXtRyyvMxjZ4"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "37"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs11kdKF4R7zerdddo9p7Ky5CzHKXebFF8cPo9VK9pvnrvXRTVXZy"
+"scs12Tgfr71PpKXJqDp8yXnohfSYoTT57KeRMEi1YacXtRyyvMxjZ4"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "37"
@@ -191,13 +191,13 @@ This sequence of operations was run:
 "\000\000\000\r"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs13Rx6jH3ve1qqqw6qAYQabea3Ub2GiXJrsWBgqJz9fcPsbBcJCc"
+"scs13M1yuX6NMTpdqWgYMx1uAtaLpiCgQAgXK2n93iua2LjfGajSiT"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "56"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs13Rx6jH3ve1qqqw6qAYQabea3Ub2GiXJrsWBgqJz9fcPsbBcJCc"
+"scs13M1yuX6NMTpdqWgYMx1uAtaLpiCgQAgXK2n93iua2LjfGajSiT"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "56"
@@ -247,13 +247,13 @@ This sequence of operations was run:
 "\000\000\000\016"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs12mPUsjGqUsfyjY1712HZzbFLHGmt23PP5WHeb8w18QHVd1GokR"
+"scs12iwXS6KpaLNTTaBqxFvkyvZpHLq8H5xp35upZ4Tz7Wqtnv68dd"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "75"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs12mPUsjGqUsfyjY1712HZzbFLHGmt23PP5WHeb8w18QHVd1GokR"
+"scs12iwXS6KpaLNTTaBqxFvkyvZpHLq8H5xp35upZ4Tz7Wqtnv68dd"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "75"
@@ -303,13 +303,13 @@ This sequence of operations was run:
 "\000\000\000\019"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs12Kb3bYztLQfaEf6zYLCTZ5uDnLVrsU8NXmy4uXu7FJCAHMQnuW"
+"scs12GyR6dnoCQ3T6NCHe7wCEwzs1FSFdMmKPk8hzvPLMWA9po1vHp"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "94"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs12Kb3bYztLQfaEf6zYLCTZ5uDnLVrsU8NXmy4uXu7FJCAHMQnuW"
+"scs12GyR6dnoCQ3T6NCHe7wCEwzs1FSFdMmKPk8hzvPLMWA9po1vHp"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "94"
@@ -359,13 +359,13 @@ This sequence of operations was run:
 "\000\000\000\022"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs11Z4sELS3xEYnoXyh5quHhzG14MM3nXvo2nzXcNeupfWqUTSY5k"
+"scs13QvpMutd3qKfBeqBUbk719sF8sG2S3PCwbm3nuVr9kib5KA9Vz"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "113"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs11Z4sELS3xEYnoXyh5quHhzG14MM3nXvo2nzXcNeupfWqUTSY5k"
+"scs13QvpMutd3qKfBeqBUbk719sF8sG2S3PCwbm3nuVr9kib5KA9Vz"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "113"
@@ -415,13 +415,13 @@ This sequence of operations was run:
 "\000\000\000\025"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs134Zv1hADCyVW44K5CJGLFvNBDWmF4My4SHEx27RJeC4YkUpFUk"
+"scs12d3sxy4uVnARXJi4KWs3cz5DrmR73Y9ZVk2DkLRXNio9i9yyX4"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "132"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs134Zv1hADCyVW44K5CJGLFvNBDWmF4My4SHEx27RJeC4YkUpFUk"
+"scs12d3sxy4uVnARXJi4KWs3cz5DrmR73Y9ZVk2DkLRXNio9i9yyX4"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "132"
@@ -472,13 +472,13 @@ This sequence of operations was run:
 "\000\000\000\028"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs137z1Hshy7zUWWM38hrmtz2E9LsPLQpMnBtnGbgXiiKHDj7P17Y"
+"scs13CsbaoCfv3vCgBWtL78hQ3sPaH7iVhmCWqBd5hvCqfQWhxje7D"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "151"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs137z1Hshy7zUWWM38hrmtz2E9LsPLQpMnBtnGbgXiiKHDj7P17Y"
+"scs13CsbaoCfv3vCgBWtL78hQ3sPaH7iVhmCWqBd5hvCqfQWhxje7D"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "151"
@@ -529,13 +529,13 @@ This sequence of operations was run:
 "\000\000\000\031"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs139dDeHknV6X8Xq9pttHXgmfQgbBTYqxFAt62Td91m3C99ezUGX"
+"scs12TkBvyg8cSuoNGfrzwM516T9isZwxAphpo7AnxJYVyPGWDwybq"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "170"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs139dDeHknV6X8Xq9pttHXgmfQgbBTYqxFAt62Td91m3C99ezUGX"
+"scs12TkBvyg8cSuoNGfrzwM516T9isZwxAphpo7AnxJYVyPGWDwybq"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "170"
@@ -586,7 +586,7 @@ This sequence of operations was run:
 "\000\000\000\""
 
 ./tezos-sc-rollup-client-alpha rpc get /global/state_hash
-"scs121tVDwin1fUikRYZEFSyoXFV7HQw8u93PvUgw4SCk6PiVYbg2o"
+"scs13GcPbRV1mSUravbXkE3LFT2SgEGu2muVHjNzKumLC91MikErA8"
 
 ./tezos-sc-rollup-client-alpha rpc get /global/total_ticks
 "190"
diff --git a/tezt/tests/expected/sc_rollup.ml/Alpha- observing the correct handling of commitments in the rollup node (commitm.out b/tezt/tests/expected/sc_rollup.ml/Alpha- observing the correct handling of commitments in the rollup node (commitm.out
index c7e6ccf29342e9ec09ace8daa3e5cf1a4e31cba7..3053a54d81177ddf11fb510ad66c6e5fa11f1f92 100644
--- a/tezt/tests/expected/sc_rollup.ml/Alpha- observing the correct handling of commitments in the rollup node (commitm.out	
+++ b/tezt/tests/expected/sc_rollup.ml/Alpha- observing the correct handling of commitments in the rollup node (commitm.out	
@@ -1299,7 +1299,7 @@ This sequence of operations was run:
 ./tezos-sc-rollup-client-alpha rpc get /global/last_stored_commitment
 { "commitment":
     { "compressed_state":
-        "scs12x8QREtVeFDNLugdWQ8ChxZfQye7upbuTwsZYp65QEUN1UX6Cw",
+        "scs123mHW8JnxvBJvMvySAKp99M3Ekvb5ntV5eLQkRJNVexjgXzTK8",
       "inbox_level": 32,
       "predecessor": "[SC_ROLLUP_COMMITMENT_HASH]",
       "number_of_messages": 465, "number_of_ticks": 1396 },
@@ -1308,7 +1308,7 @@ This sequence of operations was run:
 ./tezos-sc-rollup-client-alpha rpc get /local/last_published_commitment
 { "commitment":
     { "compressed_state":
-        "scs12x8QREtVeFDNLugdWQ8ChxZfQye7upbuTwsZYp65QEUN1UX6Cw",
+        "scs123mHW8JnxvBJvMvySAKp99M3Ekvb5ntV5eLQkRJNVexjgXzTK8",
       "inbox_level": 32,
       "predecessor": "[SC_ROLLUP_COMMITMENT_HASH]",
       "number_of_messages": 465, "number_of_ticks": 1396 },
diff --git a/tezt/tests/expected/sc_rollup.ml/Alpha- observing the correct handling of commitments in the rollup node (message.out b/tezt/tests/expected/sc_rollup.ml/Alpha- observing the correct handling of commitments in the rollup node (message.out
index a40ec8877625e0ebab2b32ddb68e326ec67e6251..dbfa923f799ca2fb2b2a144e324cb7067d2f7d3d 100644
--- a/tezt/tests/expected/sc_rollup.ml/Alpha- observing the correct handling of commitments in the rollup node (message.out	
+++ b/tezt/tests/expected/sc_rollup.ml/Alpha- observing the correct handling of commitments in the rollup node (message.out	
@@ -1299,7 +1299,7 @@ This sequence of operations was run:
 ./tezos-sc-rollup-client-alpha rpc get /global/last_stored_commitment
 { "commitment":
     { "compressed_state":
-        "scs12x8QREtVeFDNLugdWQ8ChxZfQye7upbuTwsZYp65QEUN1UX6Cw",
+        "scs123mHW8JnxvBJvMvySAKp99M3Ekvb5ntV5eLQkRJNVexjgXzTK8",
       "inbox_level": 62,
       "predecessor": "[SC_ROLLUP_COMMITMENT_HASH]",
       "number_of_messages": 0, "number_of_ticks": 0 },
@@ -1308,7 +1308,7 @@ This sequence of operations was run:
 ./tezos-sc-rollup-client-alpha rpc get /local/last_published_commitment
 { "commitment":
     { "compressed_state":
-        "scs12x8QREtVeFDNLugdWQ8ChxZfQye7upbuTwsZYp65QEUN1UX6Cw",
+        "scs123mHW8JnxvBJvMvySAKp99M3Ekvb5ntV5eLQkRJNVexjgXzTK8",
       "inbox_level": 62,
       "predecessor": "[SC_ROLLUP_COMMITMENT_HASH]",
       "number_of_messages": 0, "number_of_ticks": 0 },