diff --git a/codex/slots/proofs/backends/converters.nim b/codex/slots/proofs/backends/converters.nim
index b0c197f8..5506a9db 100644
--- a/codex/slots/proofs/backends/converters.nim
+++ b/codex/slots/proofs/backends/converters.nim
@@ -25,8 +25,6 @@ type
   CircomInputs* = Inputs
   VerifyResult* = Atomic[bool]
 
-export VerifyResult
-
 proc toCircomInputs*(inputs: ProofInputs[Poseidon2Hash]): CircomInputs =
   var
     slotIndex = inputs.slotIndex.toF.toBytes.toArray32
diff --git a/tests/codex/slots/backends/testcircomcompat.nim b/tests/codex/slots/backends/testcircomcompat.nim
index b61d4f18..a9e1fdf3 100644
--- a/tests/codex/slots/backends/testcircomcompat.nim
+++ b/tests/codex/slots/backends/testcircomcompat.nim
@@ -26,29 +26,36 @@ suite "Test Circom Compat Backend - control inputs":
   var
     circom: CircomCompat
     proofInputs: ProofInputs[Poseidon2Hash]
+    taskpool: Taskpool
 
   setup:
     let
       inputData = readFile("tests/circuits/fixtures/input.json")
       inputJson = !JsonNode.parse(inputData)
 
+    taskpool = Taskpool.new()
     proofInputs = Poseidon2Hash.jsonToProofInput(inputJson)
-    circom = CircomCompat.init(r1cs, wasm, zkey)
+    circom = CircomCompat.init(r1cs, wasm, zkey, taskpool = taskpool)
 
   teardown:
     circom.release() # this comes from the rust FFI
+    taskpool.shutdown()
 
   test "Should verify with correct inputs":
-    let proof = circom.prove(proofInputs).tryGet
+    let proof = (await circom.prove(proofInputs)).tryGet
 
-    check circom.verify(proof, proofInputs).tryGet
+    var resp = (await circom.verify(proof, proofInputs)).tryGet
+
+    check resp
 
   test "Should not verify with incorrect inputs":
     proofInputs.slotIndex = 1 # change slot index
 
-    let proof = circom.prove(proofInputs).tryGet
+    let proof = (await circom.prove(proofInputs)).tryGet
 
-    check circom.verify(proof, proofInputs).tryGet == false
+    var resp = (await circom.verify(proof, proofInputs)).tryGet
+
+    check resp == false
 
 suite "Test Circom Compat Backend":
   let
@@ -77,6 +84,7 @@ suite "Test Circom Compat Backend":
     challenge: array[32, byte]
     builder: Poseidon2Builder
     sampler: Poseidon2Sampler
+    taskpool: Taskpool
 
   setup:
     let
@@ -91,8 +99,9 @@ suite "Test Circom Compat Backend":
 
     builder = Poseidon2Builder.new(store, verifiable).tryGet
     sampler = Poseidon2Sampler.new(slotId, store, builder).tryGet
+    taskpool = Taskpool.new()
 
-    circom = CircomCompat.init(r1cs, wasm, zkey)
+    circom = CircomCompat.init(r1cs, wasm, zkey, taskpool = taskpool)
     challenge = 1234567.toF.toBytes.toArray32
 
     proofInputs = (await sampler.getProofInput(challenge, samples)).tryGet
@@ -101,15 +110,20 @@ suite "Test Circom Compat Backend":
     circom.release() # this comes from the rust FFI
     await repoTmp.destroyDb()
     await metaTmp.destroyDb()
+    taskpool.shutdown()
 
   test "Should verify with correct input":
-    var proof = circom.prove(proofInputs).tryGet
+    var proof = (await circom.prove(proofInputs)).tryGet
 
-    check circom.verify(proof, proofInputs).tryGet
+    var resp = (await circom.verify(proof, proofInputs)).tryGet
+
+    check resp == true
 
   test "Should not verify with incorrect input":
     proofInputs.slotIndex = 1 # change slot index
 
-    let proof = circom.prove(proofInputs).tryGet
+    let proof = (await circom.prove(proofInputs)).tryGet
 
-    check circom.verify(proof, proofInputs).tryGet == false
+    var resp = (await circom.verify(proof, proofInputs)).tryGet
+
+    check resp == false
diff --git a/tests/codex/slots/testbackendfactory.nim b/tests/codex/slots/testbackendfactory.nim
index a24bc41a..3ed03857 100644
--- a/tests/codex/slots/testbackendfactory.nim
+++ b/tests/codex/slots/testbackendfactory.nim
@@ -52,7 +52,7 @@ suite "Test BackendFactory":
         circomWasm: InputFile("tests/circuits/fixtures/proof_main.wasm"),
         circomZkey: InputFile("tests/circuits/fixtures/proof_main.zkey"),
       )
-      backend = config.initializeBackend(utilsMock).tryGet
+      backend = config.initializeBackend(utilsMock, taskpool = nil).tryGet
 
     check:
       backend.vkp != nil
@@ -73,7 +73,7 @@ suite "Test BackendFactory":
         # will be picked up as local files:
         circuitDir: OutDir("tests/circuits/fixtures"),
       )
-      backend = config.initializeBackend(utilsMock).tryGet
+      backend = config.initializeBackend(utilsMock, taskpool = nil).tryGet
 
     check:
       backend.vkp != nil
@@ -91,7 +91,7 @@ suite "Test BackendFactory":
         marketplaceAddress: EthAddress.example.some,
         circuitDir: OutDir(circuitDir),
       )
-      backendResult = config.initializeBackend(utilsMock)
+      backendResult = config.initializeBackend(utilsMock, taskpool = nil)
 
     check:
       backendResult.isErr
diff --git a/tests/codex/slots/testprover.nim b/tests/codex/slots/testprover.nim
index 1a7c99a4..dc955569 100644
--- a/tests/codex/slots/testprover.nim
+++ b/tests/codex/slots/testprover.nim
@@ -19,7 +19,6 @@ import ./helpers
 import ../helpers
 
 suite "Test Prover":
-  var backend: AnyBackend
   let
     samples = 5
     blockSize = DefaultBlockSize
@@ -31,6 +30,8 @@ suite "Test Prover":
   var
     store: BlockStore
     prover: Prover
+    backend: AnyBackend
+    taskpool: Taskpool
 
   setup:
     let
@@ -46,8 +47,8 @@ suite "Test Prover":
         circomZkey: InputFile("tests/circuits/fixtures/proof_main.zkey"),
         numProofSamples: samples,
       )
-
-    backend = config.initializeBackend(taskpool = Taskpool.new()).tryGet()
+    taskpool = Taskpool.new()
+    backend = config.initializeBackend(taskpool = taskpool).tryGet()
 
     store = RepoStore.new(repoDs, metaDs)
     prover = Prover.new(store, backend, config.numProofSamples)
@@ -55,6 +56,7 @@ suite "Test Prover":
   teardown:
     await repoTmp.destroyDb()
     await metaTmp.destroyDb()
+    taskpool.shutdown()
 
   test "Should sample and prove a slot":
     let (_, _, verifiable) = await createVerifiableManifest(
@@ -90,6 +92,37 @@ suite "Test Prover":
     check:
       (await prover.verify(proof, inputs)).tryGet == true
 
+  test "Should concurrently prove/verify":
+    const iterations = 5
+
+    var proveTasks = newSeq[Future[?!(AnyProofInputs, AnyProof)]]()
+    var verifyTasks = newSeq[Future[?!bool]]()
+
+    for i in 0 ..< iterations:
+      # create multiple prove tasks
+      let (_, _, verifiable) = await createVerifiableManifest(
+        store,
+        8, # number of blocks in the original dataset (before EC)
+        5, # ecK
+        3, # ecM
+        blockSize,
+        cellSize,
+      )
+
+      proveTasks.add(prover.prove(1, verifiable, challenge))
+
+    let proveResults = await allFinished(proveTasks)
+    # 
+    for i in 0 ..< proveResults.len:
+      var (inputs, proofs) = proveTasks[i].read().tryGet()
+      verifyTasks.add(prover.verify(proofs, inputs))
+
+    let verifyResults = await allFinished(verifyTasks)
+
+    for i in 0 ..< verifyResults.len:
+      check:
+        verifyResults[i].read().isErr == false
+
   test "Should complete prove/verify task when cancelled":
     let (_, _, verifiable) = await createVerifiableManifest(
       store,