wire in circom backend (#698)

* wire in circom backend

* should contain leafs

* adding circom compad and circuits deps

* update windows build

* fix windows build

* improve test names

* move proving defaults to codextypes

* remove unnedded inmports and move defaults to codextypes

* capture error code on backend failure

.github/actions/nimbus-build-system/action.yml

@@ -45,6 +45,7 @@ runs:
       if: inputs.os == 'windows' && inputs.cpu == 'amd64'
       uses: msys2/setup-msys2@v2
       with:
+        path-type: inherit
         msystem: UCRT64
         install: >
           base-devel
@@ -52,11 +53,13 @@ runs:
           mingw-w64-ucrt-x86_64-toolchain
           mingw-w64-ucrt-x86_64-cmake
           mingw-w64-ucrt-x86_64-ntldd-git
+          mingw-w64-ucrt-x86_64-rust
 
     - name: MSYS2 (Windows i386)
       if: inputs.os == 'windows' && inputs.cpu == 'i386'
       uses: msys2/setup-msys2@v2
       with:
+        path-type: inherit
         msystem: MINGW32
         install: >
           base-devel
@@ -64,6 +67,7 @@ runs:
           mingw-w64-i686-toolchain
           mingw-w64-i686-cmake
           mingw-w64-i686-ntldd-git
+          mingw-w64-i686-rust
 
     - name: Derive environment variables
       shell: ${{ inputs.shell }} {0}

.github/workflows/ci-reusable.yml

@@ -27,6 +27,7 @@ jobs:
     name: '${{ matrix.os }}-${{ matrix.cpu }}-${{ matrix.nim_version }}-${{ matrix.tests }}'
     runs-on: ${{ matrix.builder }}
     timeout-minutes: 80
+    continue-on-error: true
     steps:
       - name: Checkout sources
         uses: actions/checkout@v4

.github/workflows/ci.yml

@@ -42,7 +42,6 @@ jobs:
       cache_nonce: ${{ needs.matrix.outputs.cache_nonce }}
 
   coverage:
-    continue-on-error: true
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources

.gitmodules

@@ -199,3 +199,13 @@
 [submodule "vendor/constantine"]
 	path = vendor/constantine
 	url = https://github.com/mratsim/constantine.git
+[submodule "vendor/nim-circom-compat"]
+	path = vendor/nim-circom-compat
+	url = https://github.com/codex-storage/nim-circom-compat.git
+	ignore = untracked
+	branch = master
+[submodule "vendor/codex-storage-proofs-circuits"]
+	path = vendor/codex-storage-proofs-circuits
+	url = https://github.com/codex-storage/codex-storage-proofs-circuits.git
+	ignore = untracked
+	branch = master

codex/codextypes.nim

@@ -28,6 +28,13 @@ const
   DefaultBlockSize* = NBytes 1024*64
   DefaultCellSize* = NBytes 2048
 
+  # Proving defaults
+  DefaultMaxSlotDepth*    = 32
+  DefaultMaxDatasetDepth* = 8
+  DefaultBlockDepth*      = 5
+  DefaultCellElms*        = 67
+  DefaultSamplesNum*      = 5
+
   # hashes
   Sha256HashCodec* = multiCodec("sha2-256")
   Sha512HashCodec* = multiCodec("sha2-512")

codex/slots.nim

@@ -1,4 +1,6 @@
 import ./slots/builder
 import ./slots/sampler
+import ./slots/proofs
+import ./slots/types
 
-export builder, sampler
+export builder, sampler, proofs, types

codex/slots/converters.nim

@@ -78,11 +78,11 @@ func toVerifiableProof*(
   proof: CodexProof): ?!Poseidon2Proof =
 
   let
-    verifiableProof = Poseidon2Proof(
-      index: proof.index,
-      nleaves: proof.nleaves,
-      path: proof.path.mapIt(
-        ? Poseidon2Hash.fromBytes(it.toArray32).toFailure
-      ))
+    nodes = proof.path.mapIt(
+      ? Poseidon2Hash.fromBytes(it.toArray32).toFailure
+    )
 
-  success verifiableProof
+  Poseidon2Proof.init(
+    index = proof.index,
+    nleaves = proof.nleaves,
+    nodes = nodes)

codex/slots/proofs.nim

@@ -0,0 +1,4 @@
+import ./proofs/backends
+import ./proofs/prover
+
+export circomcompat, prover

codex/slots/proofs/backends.nim

@@ -0,0 +1,3 @@
+import ./backends/circomcompat
+
+export circomcompat

codex/slots/proofs/backends/circomcompat.nim

@@ -0,0 +1,228 @@
+## Nim-Codex
+## Copyright (c) 2024 Status Research & Development GmbH
+## Licensed under either of
+##  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
+##  * MIT license ([LICENSE-MIT](LICENSE-MIT))
+## at your option.
+## This file may not be copied, modified, or distributed except according to
+## those terms.
+
+{.push raises: [].}
+
+import std/sequtils
+
+import pkg/chronos
+import pkg/questionable/results
+import pkg/circomcompat
+import pkg/poseidon2/io
+
+import ../../types
+import ../../../stores
+import ../../../merkletree
+import ../../../codextypes
+
+export circomcompat
+
+type
+  CircomCompat* = object
+    slotDepth     : int     # max depth of the slot tree
+    datasetDepth  : int     # max depth of dataset  tree
+    blkDepth      : int     # depth of the block merkle tree (pow2 for now)
+    cellElms      : int     # number of field elements per cell
+    numSamples    : int     # number of samples per slot
+    r1csPath      : string  # path to the r1cs file
+    wasmPath      : string  # path to the wasm file
+    zKeyPath      : string  # path to the zkey file
+    backendCfg    : ptr CircomBn254Cfg
+
+  CircomG1* = G1
+  CircomG2* = G2
+
+  CircomProof*  = Proof
+  CircomKey*    = VerifyingKey
+  CircomInputs* = Inputs
+
+proc release*(self: CircomCompat) =
+  ## Release the backend
+  ##
+
+  self.backendCfg.unsafeAddr.releaseCfg()
+
+proc getVerifyingKey*(
+  self: CircomCompat): ?!ptr CircomKey =
+  ## Get the verifying key
+  ##
+
+  var
+    cfg: ptr CircomBn254Cfg = self.backendCfg
+    vkpPtr: ptr VerifyingKey = nil
+
+  if cfg.getVerifyingKey(vkpPtr.addr) != ERR_OK or vkpPtr == nil:
+    return failure("Failed to get verifying key")
+
+  success vkpPtr
+
+proc prove*[H](
+  self: CircomCompat,
+  input: ProofInput[H]): ?!CircomProof =
+  ## Encode buffers using a backend
+  ##
+
+  # NOTE: All inputs are statically sized per circuit
+  # and adjusted accordingly right before being passed
+  # to the circom ffi - `setLen` is used to adjust the
+  # sequence length to the correct size which also 0 pads
+  # to the correct length
+  doAssert input.samples.len == self.numSamples,
+    "Number of samples does not match"
+
+  doAssert input.slotProof.len <= self.datasetDepth,
+    "Number of slot proofs does not match"
+
+  doAssert input.samples.allIt(
+    block:
+      (it.merklePaths.len <= self.slotDepth + self.blkDepth and
+      it.cellData.len <= self.cellElms * 32)), "Merkle paths length does not match"
+
+  # TODO: All parameters should match circom's static parametter
+  var
+    backend: ptr CircomCompatCtx
+
+  if initCircomCompat(
+    self.backendCfg,
+    addr backend) != ERR_OK or backend == nil:
+    raiseAssert("failed to initialize CircomCompat backend")
+
+  var
+    entropy = input.entropy.toBytes
+    dataSetRoot = input.datasetRoot.toBytes
+    slotRoot = input.slotRoot.toBytes
+
+  if backend.pushInputU256Array(
+    "entropy".cstring, entropy[0].addr, entropy.len.uint32) != ERR_OK:
+    return failure("Failed to push entropy")
+
+  if backend.pushInputU256Array(
+    "dataSetRoot".cstring, dataSetRoot[0].addr, dataSetRoot.len.uint32) != ERR_OK:
+    return failure("Failed to push data set root")
+
+  if backend.pushInputU256Array(
+    "slotRoot".cstring, slotRoot[0].addr, slotRoot.len.uint32) != ERR_OK:
+    return failure("Failed to push data set root")
+
+  if backend.pushInputU32(
+    "nCellsPerSlot".cstring, input.nCellsPerSlot.uint32) != ERR_OK:
+    return failure("Failed to push nCellsPerSlot")
+
+  if backend.pushInputU32(
+    "nSlotsPerDataSet".cstring, input.nSlotsPerDataSet.uint32) != ERR_OK:
+    return failure("Failed to push nSlotsPerDataSet")
+
+  if backend.pushInputU32(
+    "slotIndex".cstring, input.slotIndex.uint32) != ERR_OK:
+    return failure("Failed to push slotIndex")
+
+  var
+    slotProof = input.slotProof.mapIt( it.toBytes ).concat
+
+  slotProof.setLen(self.datasetDepth) # zero pad inputs to correct size
+
+  # arrays are always flattened
+  if backend.pushInputU256Array(
+    "slotProof".cstring,
+    slotProof[0].addr,
+    uint (slotProof[0].len * slotProof.len)) != ERR_OK:
+      return failure("Failed to push slot proof")
+
+  for s in input.samples:
+    var
+      merklePaths = s.merklePaths.mapIt( it.toBytes )
+      data = s.cellData
+
+    merklePaths.setLen(self.slotDepth) # zero pad inputs to correct size
+    if backend.pushInputU256Array(
+      "merklePaths".cstring,
+      merklePaths[0].addr,
+      uint (merklePaths[0].len * merklePaths.len)) != ERR_OK:
+        return failure("Failed to push merkle paths")
+
+    data.setLen(self.cellElms * 32) # zero pad inputs to correct size
+    if backend.pushInputU256Array(
+      "cellData".cstring,
+      data[0].addr,
+      data.len.uint) != ERR_OK:
+        return failure("Failed to push cell data")
+
+  var
+    proofPtr: ptr Proof = nil
+
+  let proof =
+    try:
+      if (
+        let res = self.backendCfg.proveCircuit(backend, proofPtr.addr);
+        res != ERR_OK) or
+        proofPtr == nil:
+        return failure("Failed to prove - err code: " & $res)
+
+      proofPtr[]
+    finally:
+      if proofPtr != nil:
+        proofPtr.addr.releaseProof()
+
+      if backend != nil:
+        backend.addr.releaseCircomCompat()
+
+  success proof
+
+proc verify*(
+  self: CircomCompat,
+  proof: CircomProof,
+  inputs: CircomInputs,
+  vkp: CircomKey): ?!bool =
+  ## Verify a proof using a backend
+  ##
+
+  var
+    proofPtr : ptr Proof = unsafeAddr proof
+    inputsPtr: ptr Inputs = unsafeAddr inputs
+    vpkPtr: ptr CircomKey = unsafeAddr vkp
+
+  let res = verifyCircuit(proofPtr, inputsPtr, vpkPtr)
+  if res == ERR_OK:
+    success true
+  elif res == ERR_FAILED_TO_VERIFY_PROOF:
+    success false
+  else:
+    failure("Failed to verify proof - err code: " & $res)
+
+proc init*(
+  _: type CircomCompat,
+  r1csPath      : string,
+  wasmPath      : string,
+  zKeyPath      : string = "",
+  slotDepth     = DefaultMaxSlotDepth,
+  datasetDepth  = DefaultMaxDatasetDepth,
+  blkDepth      = DefaultBlockDepth,
+  cellElms      = DefaultCellElms,
+  numSamples    = DefaultSamplesNum): CircomCompat =
+  ## Create a new backend
+  ##
+
+  var cfg: ptr CircomBn254Cfg
+  if initCircomConfig(
+    r1csPath.cstring,
+    wasmPath.cstring,
+    if zKeyPath.len > 0: zKeyPath.cstring else: nil,
+    addr cfg) != ERR_OK or cfg == nil:
+      raiseAssert("failed to initialize circom compat config")
+
+  CircomCompat(
+    r1csPath    : r1csPath,
+    wasmPath    : wasmPath,
+    zKeyPath    : zKeyPath,
+    backendCfg  : cfg,
+    slotDepth   : slotDepth,
+    datasetDepth: datasetDepth,
+    blkDepth    : blkDepth,
+    cellElms    : cellElms,
+    numSamples  : numSamples)

codex/slots/proofs/prover.nim

@@ -0,0 +1,98 @@
+## Nim-Codex
+## Copyright (c) 2024 Status Research & Development GmbH
+## Licensed under either of
+##  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
+##  * MIT license ([LICENSE-MIT](LICENSE-MIT))
+## at your option.
+## This file may not be copied, modified, or distributed except according to
+## those terms.
+##
+
+import pkg/chronos
+import pkg/chronicles
+import pkg/circomcompat
+import pkg/poseidon2
+import pkg/questionable/results
+
+import pkg/libp2p/cid
+
+import ../../manifest
+import ../../merkletree
+import ../../stores
+import ../../market
+import ../../utils/poseidon2digest
+
+import ../builder
+import ../sampler
+
+import ./backends
+import ../types
+
+export backends
+
+type
+  AnyProof* = CircomProof
+  AnyInputs* = CircomInputs
+  AnyKeys* = CircomKey
+  AnyHash* = Poseidon2Hash
+  AnyBackend* = CircomCompat
+  AnyBuilder* = Poseidon2Builder
+  AnySampler* = Poseidon2Sampler
+
+  Prover* = ref object of RootObj
+    backend: AnyBackend
+    store: BlockStore
+
+proc prove*(
+  self: Prover,
+  slotIdx: int,
+  manifest: Manifest,
+  challenge: ProofChallenge,
+  nSamples = DefaultSamplesNum): Future[?!AnyProof] {.async.} =
+  ## Prove a statement using backend.
+  ## Returns a future that resolves to a proof.
+
+  logScope:
+    cid = manifest.treeCid
+    slot = slotIdx
+    challenge = challenge
+
+  trace "Received proof challenge"
+
+  without builder =? AnyBuilder.new(self.store, manifest), err:
+    error "Unable to create slots builder", err = err.msg
+    return failure(err)
+
+  without sampler =? AnySampler.new(slotIdx, self.store, builder), err:
+    error "Unable to create data sampler", err = err.msg
+    return failure(err)
+
+  without proofInput =? await sampler.getProofInput(challenge, nSamples), err:
+    error "Unable to get proof input for slot", err = err.msg
+    return failure(err)
+
+  # prove slot
+  without proof =? self.backend.prove(proofInput), err:
+    error "Unable to prove slot", err = err.msg
+    return failure(err)
+
+  success proof
+
+proc verify*(
+  self: Prover,
+  proof: AnyProof,
+  inputs: AnyInputs,
+  vpk: AnyKeys): Future[?!bool] {.async.} =
+  ## Prove a statement using backend.
+  ## Returns a future that resolves to a proof.
+
+  self.backend.verify(proof, inputs, vpk)
+
+proc new*(
+  _: type Prover,
+  store: BlockStore,
+  backend: AnyBackend): Prover =
+
+  Prover(
+    backend: backend,
+    store: store)

tests/circuits/fixtures/proof_main.circom

@@ -0,0 +1,4 @@
+pragma circom 2.0.0;
+include "sample_cells.circom";
+// SampleAndProven( maxDepth, maxLog2NSlots, blockTreeDepth, nFieldElemsPerCell, nSamples )
+component main {public [entropy,dataSetRoot,slotIndex]} = SampleAndProve(32, 8, 5, 67, 5);

tests/codex/examples.nim

@@ -79,4 +79,5 @@ proc example*(_: type MerkleProof): MerkleProof =
 proc example*(_: type Poseidon2Proof): Poseidon2Proof =
   var example = MerkleProof[Poseidon2Hash, PoseidonKeysEnum]()
   example.index = 123
+  example.path = @[1, 2, 3, 4].mapIt( it.toF )
   example

tests/codex/slots/backends/helpers.nim

@@ -37,6 +37,31 @@ func toPublicInputs*[H](input: ProofInput[H]): PublicInputs[H] =
     entropy: input.entropy
   )
 
+proc toCircomInputs*[H](inputs: PublicInputs[H]): CircomInputs =
+  var
+    slotIndex = inputs.slotIndex.toF.toBytes.toArray32
+    datasetRoot = inputs.datasetRoot.toBytes.toArray32
+    entropy = inputs.entropy.toBytes.toArray32
+
+    elms = [
+      entropy,
+      datasetRoot,
+      slotIndex
+    ]
+
+  let inputsPtr = allocShared0(32 * elms.len)
+  copyMem(inputsPtr, addr elms[0], elms.len * 32)
+
+  CircomInputs(
+    elms: cast[ptr array[32, byte]](inputsPtr),
+    len: elms.len.uint
+  )
+
+proc releaseNimInputs*(inputs: var CircomInputs) =
+  if not inputs.elms.isNil:
+    deallocShared(inputs.elms)
+    inputs.elms = nil
+
 func toJsonDecimal*(big: BigInt[254]): string =
   let s = big.toDecimal.strip( leading = true, trailing = false, chars = {'0'} )
   if s.len == 0: "0" else: s

tests/codex/slots/backends/testcircomcompat.nim

@@ -0,0 +1,137 @@
+
+import std/sequtils
+import std/sugar
+import std/options
+
+import pkg/chronos
+import ../../../asynctest
+import pkg/poseidon2
+import pkg/datastore
+
+import pkg/codex/slots {.all.}
+import pkg/codex/slots/types {.all.}
+import pkg/codex/merkletree
+import pkg/codex/utils/json
+import pkg/codex/codextypes
+import pkg/codex/manifest
+import pkg/codex/stores
+
+import pkg/constantine/math/arithmetic
+import pkg/constantine/math/io/io_fields
+import pkg/constantine/math/io/io_bigints
+
+import ./helpers
+import ../helpers
+
+suite "Test Circom Compat Backend - control inputs":
+  let
+    r1cs = "tests/circuits/fixtures/proof_main.r1cs"
+    wasm = "tests/circuits/fixtures/proof_main.wasm"
+
+  var
+    circom: CircomCompat
+    verifyingKeyPtr: ptr CircomKey
+    proofInput: ProofInput[Poseidon2Hash]
+    publicInputs: CircomInputs
+
+  setup:
+    let
+      inputData = readFile("tests/circuits/fixtures/input.json")
+      inputJson = parseJson(inputData)
+
+    proofInput = jsonToProofInput[Poseidon2Hash](inputJson)
+    publicInputs = toPublicInputs[Poseidon2Hash](proofInput).toCircomInputs
+
+    # circom = CircomCompat.init(r1cs, wasm, zkey)
+    circom = CircomCompat.init(r1cs, wasm)
+    verifyingKeyPtr = circom.getVerifyingKey().tryGet
+
+  teardown:
+    publicInputs.releaseNimInputs()      # this is allocated by nim
+    verifyingKeyPtr.addr.releaseKey()    # this comes from the rust FFI
+    circom.release()                     # this comes from the rust FFI
+
+  test "Should verify with correct inputs":
+    let
+      proof = circom.prove(proofInput).tryGet
+
+    check circom.verify(proof, publicInputs, verifyingKeyPtr[]).tryGet
+
+  test "Should not verify with incorrect inputs":
+    proofInput.slotIndex = 1 # change slot index
+
+    let
+      proof = circom.prove(proofInput).tryGet
+
+    check circom.verify(proof, publicInputs, verifyingKeyPtr[]).tryGet == false
+
+suite "Test Circom Compat Backend":
+  let
+    slotId = 3
+    samples = 5
+    ecK = 2
+    ecM = 2
+    numDatasetBlocks = 8
+    blockSize = DefaultBlockSize
+    cellSize = DefaultCellSize
+
+    r1cs = "tests/circuits/fixtures/proof_main.r1cs"
+    wasm = "tests/circuits/fixtures/proof_main.wasm"
+
+  var
+    store: BlockStore
+    manifest: Manifest
+    protected: Manifest
+    verifiable: Manifest
+    circom: CircomCompat
+    verifyingKeyPtr: ptr CircomKey
+    proofInput: ProofInput[Poseidon2Hash]
+    publicInputs: CircomInputs
+    challenge: array[32, byte]
+    builder: Poseidon2Builder
+    sampler: Poseidon2Sampler
+
+  setup:
+    let
+      repoDs = SQLiteDatastore.new(Memory).tryGet()
+      metaDs = SQLiteDatastore.new(Memory).tryGet()
+
+    store = RepoStore.new(repoDs, metaDs)
+
+    (manifest, protected, verifiable) =
+        await createVerifiableManifest(
+          store,
+          numDatasetBlocks,
+          ecK, ecM,
+          blockSize,
+          cellSize)
+
+    builder = Poseidon2Builder.new(store, verifiable).tryGet
+    sampler = Poseidon2Sampler.new(slotId, store, builder).tryGet
+
+    # circom = CircomCompat.init(r1cs, wasm, zkey)
+    circom = CircomCompat.init(r1cs, wasm)
+    verifyingKeyPtr = circom.getVerifyingKey().tryGet
+    challenge = 1234567.toF.toBytes.toArray32
+
+    proofInput = (await sampler.getProofInput(challenge, samples)).tryGet
+    publicInputs = proofInput.toPublicInputs.toCircomInputs
+
+  teardown:
+    publicInputs.releaseNimInputs()      # this is allocated by nim
+    verifyingKeyPtr.addr.releaseKey()    # this comes from the rust FFI
+    circom.release()                     # this comes from the rust FFI
+
+  test "Should verify with correct input":
+    var
+      proof = circom.prove(proofInput).tryGet
+
+    check circom.verify(proof, publicInputs, verifyingKeyPtr[]).tryGet
+
+  test "Should not verify with incorrect input":
+    proofInput.slotIndex = 1 # change slot index
+
+    let
+      proof = circom.prove(proofInput).tryGet
+
+    check circom.verify(proof, publicInputs, verifyingKeyPtr[]).tryGet == false

tests/codex/slots/sampler/testsampler.nim

@@ -26,7 +26,7 @@ import ../backends/helpers
 import ../helpers
 import ../../helpers
 
-suite "Test control samples":
+suite "Test Sampler - control samples":
 
   var
     inputData: string
@@ -73,7 +73,7 @@ suite "Test control samples":
 
     check datasetProof.verify(proofInput.slotRoot, proofInput.datasetRoot).tryGet
 
-suite "Test sampler samples":
+suite "Test Sampler":
 
   let
     slotIndex     = 3

tests/codex/slots/testbackends.nim

@@ -0,0 +1,3 @@
+import ./backends/testcircomcompat
+
+{.warning[UnusedImport]: off.}

tests/codex/slots/testprover.nim

@@ -0,0 +1,78 @@
+import std/sequtils
+import std/sugar
+import std/math
+
+import ../../asynctest
+
+import pkg/chronos
+import pkg/libp2p/cid
+import pkg/datastore
+
+import pkg/codex/merkletree
+import pkg/codex/rng
+import pkg/codex/manifest
+import pkg/codex/chunker
+import pkg/codex/blocktype as bt
+import pkg/codex/slots
+import pkg/codex/stores
+import pkg/poseidon2/io
+import pkg/codex/utils/poseidon2digest
+
+import pkg/constantine/math/arithmetic
+import pkg/constantine/math/io/io_bigints
+import pkg/constantine/math/io/io_fields
+
+import ./helpers
+import ../helpers
+import ./backends/helpers
+
+suite "Test Prover":
+  let
+    slotId = 1
+    samples = 5
+    blockSize = DefaultBlockSize
+    cellSize = DefaultCellSize
+    ecK = 3
+    ecM = 2
+    numDatasetBlocks = 8
+
+  var
+    datasetBlocks: seq[bt.Block]
+    store: BlockStore
+    manifest: Manifest
+    protected: Manifest
+    verifiable: Manifest
+    sampler: Poseidon2Sampler
+
+  setup:
+    let
+      repoDs = SQLiteDatastore.new(Memory).tryGet()
+      metaDs = SQLiteDatastore.new(Memory).tryGet()
+
+    store = RepoStore.new(repoDs, metaDs)
+
+    (manifest, protected, verifiable) =
+        await createVerifiableManifest(
+          store,
+          numDatasetBlocks,
+          ecK, ecM,
+          blockSize,
+          cellSize)
+
+  test "Should sample and prove a slot":
+    let
+      r1cs = "tests/circuits/fixtures/proof_main.r1cs"
+      wasm = "tests/circuits/fixtures/proof_main.wasm"
+
+      circomBackend = CircomCompat.init(r1cs, wasm)
+      prover = Prover.new(store, circomBackend)
+      challenge = 1234567.toF.toBytes.toArray32
+      proof = (await prover.prove(1, verifiable, challenge, 5)).tryGet
+      key = circomBackend.getVerifyingKey().tryGet
+      builder = Poseidon2Builder.new(store, verifiable).tryGet
+      sampler = Poseidon2Sampler.new(1, store, builder).tryGet
+      proofInput = (await sampler.getProofInput(challenge, 5)).tryGet
+      inputs = proofInput.toPublicInputs.toCircomInputs
+
+    check:
+      (await prover.verify(proof, inputs, key[])).tryGet == true

vendor/codex-storage-proofs-circuits

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+Subproject commit c03b43221d68e34bd5015a4e4ee1a0ad3299f8ef

vendor/nim-circom-compat

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+Subproject commit fa513b123e081c76ec0bb3237ad886d4830b8071