diff --git a/codex/slots/proofs/backends/asynccircoms.nim b/codex/slots/proofs/backends/asynccircoms.nim
index b3046e34..5a008b5d 100644
--- a/codex/slots/proofs/backends/asynccircoms.nim
+++ b/codex/slots/proofs/backends/asynccircoms.nim
@@ -114,3 +114,11 @@ proc init*(
   ##
   let circom = CircomCompat.init(params)
   AsyncCircomCompat(circom: circom, tp: tp)
+
+proc duplicate*(
+    self: AsyncCircomCompat, tp: Taskpool
+): AsyncCircomCompat =
+  ## Create a new async circom
+  ##
+  let circom = self.circom.duplicate()
+  AsyncCircomCompat(circom: circom, tp: tp)
diff --git a/codex/slots/proofs/backends/circomcompat.nim b/codex/slots/proofs/backends/circomcompat.nim
index 6cd925dd..2fee7b35 100644
--- a/codex/slots/proofs/backends/circomcompat.nim
+++ b/codex/slots/proofs/backends/circomcompat.nim
@@ -235,3 +235,13 @@ proc init*(
     raiseAssert("Failed to get verifying key")
 
   CircomCompat(params: params, backendCfg: cfg, vkp: vkpPtr)
+
+proc duplicate*(
+  self: CircomCompat,
+): CircomCompat =
+  ## Create a new ctx
+  var cfg: ptr CircomBn254Cfg
+  if duplicateCircomConfig(self.backendCfg, cfg.addr) != ERR_OK or cfg == nil:
+      if cfg != nil: cfg.addr.releaseCfg()
+      raiseAssert("failed to initialize circom compat config")
+  CircomCompat(params: self.params, backendCfg: cfg, vkp: self.vkp)
diff --git a/tests/codex/slots/testprover.nim b/tests/codex/slots/testprover.nim
index 662e899f..0065a246 100644
--- a/tests/codex/slots/testprover.nim
+++ b/tests/codex/slots/testprover.nim
@@ -77,27 +77,46 @@ suite "Test Prover":
     check:
       (await prover.verify(proof, inputs)).tryGet == true
 
-  test "Should sample and prove many slot":
+  test "Should sample and prove a slot with another circom":
     let
       r1cs = "tests/circuits/fixtures/proof_main.r1cs"
       wasm = "tests/circuits/fixtures/proof_main.wasm"
 
-      taskpool = Taskpool.new(num_threads = 6)
+      taskpool = Taskpool.new(num_threads = 2)
       params = CircomCompatParams.init(r1cs, wasm)
       circomBackend = AsyncCircomCompat.init(params, taskpool)
       prover = Prover.new(store, circomBackend, samples)
+      challenge = 1234567.toF.toBytes.toArray32
+      (inputs, proof) = (await prover.prove(1, verifiable, challenge)).tryGet
 
-    var proofs = newSeq[Future[?!(AnyProofInputs, AnyProof)]]()
-    for i in 1..50:
-      echo "PROVE: ", i
-      let
-        challenge = (1234567).toF.toBytes.toArray32
+    let
+      taskpool2 = Taskpool.new(num_threads = 2)
+      circomVerifyBackend = circomBackend.duplicate(taskpool2)
+      proverVerify = Prover.new(store, circomVerifyBackend, samples)
+    check:
+      (await proverVerify.verify(proof, inputs)).tryGet == true
 
-      proofs.add(prover.prove(1, verifiable, challenge))
+  # test "Should sample and prove many slot":
+  #   let
+  #     r1cs = "tests/circuits/fixtures/proof_main.r1cs"
+  #     wasm = "tests/circuits/fixtures/proof_main.wasm"
 
-    await allFutures(proofs)
+  #     taskpool = Taskpool.new(num_threads = 6)
+  #     params = CircomCompatParams.init(r1cs, wasm)
+  #     circomBackend = AsyncCircomCompat.init(params, taskpool)
+  #     prover = Prover.new(store, circomBackend, samples)
 
-    for pf in proofs:
-      let (inputs, proof) = (await pf).tryGet
-      check:
-          (await prover.verify(proof, inputs)).tryGet == true
+  #   var proofs = newSeq[Future[?!(AnyProofInputs, AnyProof)]]()
+  #   for i in 1..50:
+  #     echo "PROVE: ", i
+  #     let
+  #       challenge = (1234567).toF.toBytes.toArray32
+
+  #     proofs.add(prover.prove(1, verifiable, challenge))
+
+  #   await allFutures(proofs)
+
+  #   for pf in proofs:
+  #     let (inputs, proof) = (await pf).tryGet
+  #     check:
+  #         (await prover.verify(proof, inputs)).tryGet == true
diff --git a/vendor/nim-circom-compat b/vendor/nim-circom-compat
index cc2e742b..7c1105bb 160000
--- a/vendor/nim-circom-compat
+++ b/vendor/nim-circom-compat
@@ -1 +1 @@
-Subproject commit cc2e742b7ac7a0fdf273b6bebdb9b5b42e3dc722
+Subproject commit 7c1105bb77f0ce7b1b3cc0cb3e78db89265ba05f