diff --git a/field/field.go b/field/field.go
index 1894787..bbd71a1 100644
--- a/field/field.go
+++ b/field/field.go
@@ -8,6 +8,7 @@ import (
 
 type EmulatedField = emulated.Goldilocks
 type F = emulated.Element[EmulatedField]
+type QuadraticExtension = [2]F
 type Hash = [4]F
 
 var TEST_CURVE = ecc.BN254
diff --git a/plonky2_verifier/challenger_test.go b/plonky2_verifier/challenger_test.go
index b351c9f..7516d3e 100644
--- a/plonky2_verifier/challenger_test.go
+++ b/plonky2_verifier/challenger_test.go
@@ -23,8 +23,8 @@ type TestChallengerCircuit struct {
 
 func (circuit *TestChallengerCircuit) Define(api frontend.API) error {
 	field := field.NewFieldAPI(api)
-	poseidon := NewPoseidonChip(api, field)
-	challenger := NewChallengerChip(api, field, *poseidon)
+	poseidonChip := NewPoseidonChip(api, field)
+	challengerChip := NewChallengerChip(api, field, *poseidonChip)
 
 	var circuitDigest [4]F
 	for i := 0; i < len(circuitDigest); i++ {
@@ -43,14 +43,14 @@ func (circuit *TestChallengerCircuit) Define(api frontend.API) error {
 		}
 	}
 
-	publicInputHash := poseidon.HashNoPad(publicInputs[:])
-	challenger.ObserveHash(circuitDigest)
-	challenger.ObserveHash(publicInputHash)
-	challenger.ObserveCap(wiresCap[:])
+	publicInputHash := poseidonChip.HashNoPad(publicInputs[:])
+	challengerChip.ObserveHash(circuitDigest)
+	challengerChip.ObserveHash(publicInputHash)
+	challengerChip.ObserveCap(wiresCap[:])
 
 	nbChallenges := 2
-	plonkBetas := challenger.GetNChallenges(nbChallenges)
-	plonkGammas := challenger.GetNChallenges(nbChallenges)
+	plonkBetas := challengerChip.GetNChallenges(nbChallenges)
+	plonkGammas := challengerChip.GetNChallenges(nbChallenges)
 
 	expectedPlonkBetas := [2]frontend.Variable{
 		frontend.Variable("4678728155650926271"),
diff --git a/plonky2_verifier/deserialize_proof.go b/plonky2_verifier/deserialize_proof.go
new file mode 100644
index 0000000..23551e2
--- /dev/null
+++ b/plonky2_verifier/deserialize_proof.go
@@ -0,0 +1,241 @@
+package plonky2_verifier
+
+import (
+	"encoding/json"
+	. "gnark-ed25519/field"
+	"gnark-ed25519/utils"
+	"io/ioutil"
+	"os"
+)
+
+// type HashRaw = []uint64
+
+// type MerkleCapRaw struct {
+// 	Elements []HashRaw `json:"elements"`
+// }
+
+// type QuadraticExtensionRaw = [2]uint64
+
+// type OpeningSetRaw struct {
+// 	Constants       []QuadraticExtensionRaw `json:"constants"`
+// 	PlonkSigmas     []QuadraticExtensionRaw `json:"plonk_sigmas"`
+// 	Wires           []QuadraticExtensionRaw `json:"wires"`
+// 	PlonkZs         []QuadraticExtensionRaw `json:"plonk_zs"`
+// 	PlonkZsNext     []QuadraticExtensionRaw `json:"plonk_zs_next"`
+// 	PartialProducts []QuadraticExtensionRaw `json:"partial_products"`
+// 	QuotientPolys   []QuadraticExtensionRaw `json:"quotient_polys"`
+// }
+
+// type FriQueryRoundRaw struct {
+// 	InitialTreesProof struct {
+// 		EvalsProofs [][]interface{} `json:"evals_proofs"`
+// 	} `json:"initial_trees_proof"`
+// 	Steps []uint64 `json:"steps"`
+// }
+
+// type PolynomialCoeffsRaw struct {
+// 	Coeffs []uint64 `json:"coeffs"`
+// }
+
+// type FriProofRaw struct {
+// 	CommitPhaseMerkleCaps []MerkleCapRaw      `json:"commit_phase_merkle_caps"`
+// 	QueryRoundProofs      FriQueryRoundRaw    `json:"query_round_proofs"`
+// 	FinalPoly             PolynomialCoeffsRaw `json:"final_poly"`
+// 	PowWitness            uint64              `json:"pow_witness"`
+// }
+
+// type ProofWithPublicInputsRaw struct {
+// 	Proof struct {
+// 		WiresCap                  MerkleCapRaw  `json:"wires_cap"`
+// 		PlonkZsPartialProductsCap MerkleCapRaw  `json:"plonk_zs_partial_products_cap"`
+// 		QuotientPolysCap          MerkleCapRaw  `json:"quotient_polys_cap"`
+// 		Openings                  OpeningSetRaw `json:"openings"`
+// 		OpeningProof              FriProofRaw   `json:"opening_proof"`
+// 	} `json:"proof"`
+// 	PublicInputs []uint64 `json:"public_inputs"`
+// }
+
+type ProofWithPublicInputsRaw struct {
+	Proof struct {
+		WiresCap []struct {
+			Elements []uint64 `json:"elements"`
+		} `json:"wires_cap"`
+		PlonkZsPartialProductsCap []struct {
+			Elements []uint64 `json:"elements"`
+		} `json:"plonk_zs_partial_products_cap"`
+		QuotientPolysCap []struct {
+			Elements []uint64 `json:"elements"`
+		} `json:"quotient_polys_cap"`
+		Openings struct {
+			Constants       [][]uint64 `json:"constants"`
+			PlonkSigmas     [][]uint64 `json:"plonk_sigmas"`
+			Wires           [][]uint64 `json:"wires"`
+			PlonkZs         [][]uint64 `json:"plonk_zs"`
+			PlonkZsNext     [][]uint64 `json:"plonk_zs_next"`
+			PartialProducts [][]uint64 `json:"partial_products"`
+			QuotientPolys   [][]uint64 `json:"quotient_polys"`
+		} `json:"openings"`
+		OpeningProof struct {
+			CommitPhaseMerkleCaps []interface{} `json:"commit_phase_merkle_caps"`
+			QueryRoundProofs      []struct {
+				InitialTreesProof struct {
+					EvalsProofs [][]interface{} `json:"evals_proofs"`
+				} `json:"initial_trees_proof"`
+				Steps []interface{} `json:"steps"`
+			} `json:"query_round_proofs"`
+			FinalPoly struct {
+				Coeffs [][]uint64 `json:"coeffs"`
+			} `json:"final_poly"`
+			PowWitness uint64 `json:"pow_witness"`
+		} `json:"opening_proof"`
+	} `json:"proof"`
+	PublicInputs []interface{} `json:"public_inputs"`
+}
+
+type CommonCircuitDataRaw struct {
+	Config struct {
+		NumWires                uint64 `json:"num_wires"`
+		NumRoutedWires          uint64 `json:"num_routed_wires"`
+		NumConstants            uint64 `json:"num_constants"`
+		UseBaseArithmeticGate   bool   `json:"use_base_arithmetic_gate"`
+		SecurityBits            uint64 `json:"security_bits"`
+		NumChallenges           uint64 `json:"num_challenges"`
+		ZeroKnowledge           bool   `json:"zero_knowledge"`
+		MaxQuotientDegreeFactor uint64 `json:"max_quotient_degree_factor"`
+		FriConfig               struct {
+			RateBits          uint64 `json:"rate_bits"`
+			CapHeight         uint64 `json:"cap_height"`
+			ProofOfWorkBits   uint64 `json:"proof_of_work_bits"`
+			ReductionStrategy struct {
+				ConstantArityBits []uint64 `json:"ConstantArityBits"`
+			} `json:"reduction_strategy"`
+			NumQueryRounds uint64 `json:"num_query_rounds"`
+		} `json:"fri_config"`
+	} `json:"config"`
+	FriParams struct {
+		Config struct {
+			RateBits          uint64 `json:"rate_bits"`
+			CapHeight         uint64 `json:"cap_height"`
+			ProofOfWorkBits   uint64 `json:"proof_of_work_bits"`
+			ReductionStrategy struct {
+				ConstantArityBits []uint64 `json:"ConstantArityBits"`
+			} `json:"reduction_strategy"`
+			NumQueryRounds uint64 `json:"num_query_rounds"`
+		} `json:"config"`
+		Hiding             bool          `json:"hiding"`
+		DegreeBits         uint64        `json:"degree_bits"`
+		ReductionArityBits []interface{} `json:"reduction_arity_bits"`
+	} `json:"fri_params"`
+	DegreeBits    uint64 `json:"degree_bits"`
+	SelectorsInfo struct {
+		SelectorIndices []uint64 `json:"selector_indices"`
+		Groups          []struct {
+			Start uint64 `json:"start"`
+			End   uint64 `json:"end"`
+		} `json:"groups"`
+	} `json:"selectors_info"`
+	QuotientDegreeFactor uint64        `json:"quotient_degree_factor"`
+	NumGateConstraints   uint64        `json:"num_gate_constraints"`
+	NumConstants         uint64        `json:"num_constants"`
+	NumPublicInputs      uint64        `json:"num_public_inputs"`
+	KIs                  []interface{} `json:"k_is"`
+	NumPartialProducts   uint64        `json:"num_partial_products"`
+	CircuitDigest        struct {
+		Elements []uint64 `json:"elements"`
+	} `json:"circuit_digest"`
+}
+
+type VerifierOnlyCircuitDataRaw struct {
+	ConstantsSigmasCap []struct {
+		Elements []uint64 `json:"elements"`
+	} `json:"constants_sigmas_cap"`
+}
+
+func DeserializeMerkleCap(merkleCapRaw []struct{ Elements []uint64 }) MerkleCap {
+	n := len(merkleCapRaw)
+	merkleCap := make([]Hash, n)
+	for i := 0; i < n; i++ {
+		copy(merkleCap[i][:], utils.Uint64ArrayToFArray(merkleCapRaw[i].Elements))
+	}
+	return merkleCap
+}
+
+func DeserializeOpeningSet(openingSetRaw struct {
+	Constants       [][]uint64
+	PlonkSigmas     [][]uint64
+	Wires           [][]uint64
+	PlonkZs         [][]uint64
+	PlonkZsNext     [][]uint64
+	PartialProducts [][]uint64
+	QuotientPolys   [][]uint64
+}) OpeningSet {
+	return OpeningSet{
+		Constants:       utils.Uint64ArrayToQuadraticExtensionArray(openingSetRaw.Constants),
+		PlonkSigmas:     utils.Uint64ArrayToQuadraticExtensionArray(openingSetRaw.PlonkSigmas),
+		Wires:           utils.Uint64ArrayToQuadraticExtensionArray(openingSetRaw.Wires),
+		PlonkZs:         utils.Uint64ArrayToQuadraticExtensionArray(openingSetRaw.PlonkZs),
+		PlonkZsNext:     utils.Uint64ArrayToQuadraticExtensionArray(openingSetRaw.PlonkZsNext),
+		PartialProducts: utils.Uint64ArrayToQuadraticExtensionArray(openingSetRaw.PartialProducts),
+		QuotientPolys:   utils.Uint64ArrayToQuadraticExtensionArray(openingSetRaw.QuotientPolys),
+	}
+}
+
+func DeserializeFriProof(openingProofRaw struct {
+	CommitPhaseMerkleCaps []interface{}
+	QueryRoundProofs      []struct {
+		InitialTreesProof struct {
+			EvalsProofs [][]interface{}
+		}
+		Steps []interface{}
+	}
+	FinalPoly struct {
+		Coeffs [][]uint64
+	}
+	PowWitness uint64
+}) FriProof {
+	var openingProof FriProof
+	openingProof.PowWitness = NewFieldElement(openingProofRaw.PowWitness)
+	openingProof.FinalPoly.Coeffs = utils.Uint64ArrayToQuadraticExtensionArray(openingProofRaw.FinalPoly.Coeffs)
+	return openingProof
+}
+
+func DeserializeProofWithPublicInputs(path string) ProofWithPublicInputs {
+	jsonFile, err := os.Open(path)
+	if err != nil {
+		panic(err)
+	}
+
+	defer jsonFile.Close()
+	rawBytes, _ := ioutil.ReadAll(jsonFile)
+
+	var raw ProofWithPublicInputsRaw
+	err = json.Unmarshal(rawBytes, &raw)
+	if err != nil {
+		panic(err)
+	}
+
+	var proofWithPis ProofWithPublicInputs
+	proofWithPis.Proof.WiresCap = DeserializeMerkleCap([]struct{ Elements []uint64 }(raw.Proof.WiresCap))
+	proofWithPis.Proof.PlonkZsPartialProductsCap = DeserializeMerkleCap([]struct{ Elements []uint64 }(raw.Proof.PlonkZsPartialProductsCap))
+	proofWithPis.Proof.QuotientPolysCap = DeserializeMerkleCap([]struct{ Elements []uint64 }(raw.Proof.QuotientPolysCap))
+	proofWithPis.Proof.Openings = DeserializeOpeningSet(struct {
+		Constants       [][]uint64
+		PlonkSigmas     [][]uint64
+		Wires           [][]uint64
+		PlonkZs         [][]uint64
+		PlonkZsNext     [][]uint64
+		PartialProducts [][]uint64
+		QuotientPolys   [][]uint64
+	}(raw.Proof.Openings))
+	proofWithPis.Proof.OpeningProof = DeserializeFriProof(struct {
+		CommitPhaseMerkleCaps []interface{}
+		QueryRoundProofs      []struct {
+			InitialTreesProof struct{ EvalsProofs [][]interface{} }
+			Steps             []interface{}
+		}
+		FinalPoly  struct{ Coeffs [][]uint64 }
+		PowWitness uint64
+	}(raw.Proof.OpeningProof))
+
+	return proofWithPis
+}
diff --git a/plonky2_verifier/deserialize_proof_test.go b/plonky2_verifier/deserialize_proof_test.go
new file mode 100644
index 0000000..c88be42
--- /dev/null
+++ b/plonky2_verifier/deserialize_proof_test.go
@@ -0,0 +1,12 @@
+package plonky2_verifier
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestDeserializeProofWithPublicInputs(t *testing.T) {
+	proofWithPis := DeserializeProofWithPublicInputs("./fibonacci_proof.json")
+	fmt.Printf("%+v\n", proofWithPis)
+	panic("look at stdout")
+}
diff --git a/plonky2_verifier/proof.go b/plonky2_verifier/proof.go
index 6bb5863..b13e822 100644
--- a/plonky2_verifier/proof.go
+++ b/plonky2_verifier/proof.go
@@ -4,8 +4,6 @@ import (
 	. "gnark-ed25519/field"
 )
 
-type QuadraticExtension = [2]F
-
 type MerkleCap = []Hash
 
 type MerkleProof struct {
@@ -32,7 +30,7 @@ type FriQueryRound struct {
 }
 
 type PolynomialCoeffs struct {
-	Coeffs []F
+	Coeffs []QuadraticExtension
 }
 
 type FriProof struct {
diff --git a/poseidon/poseidon_test.go b/poseidon/poseidon_test.go
index 1271b60..03137c8 100644
--- a/poseidon/poseidon_test.go
+++ b/poseidon/poseidon_test.go
@@ -25,8 +25,8 @@ func (circuit *TestPoseidonCircuit) Define(api frontend.API) error {
 		input[i] = goldilocksApi.FromBinary(api.ToBinary(circuit.In[i], 64)).(F)
 	}
 
-	chip := NewPoseidonChip(api, goldilocksApi)
-	output := chip.Poseidon(input)
+	poseidonChip := NewPoseidonChip(api, goldilocksApi)
+	output := poseidonChip.Poseidon(input)
 
 	for i := 0; i < 12; i++ {
 		goldilocksApi.AssertIsEqual(
diff --git a/utils/utils.go b/utils/utils.go
index f2e2f91..b4d30d8 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -33,3 +33,11 @@ func Uint64ArrayToFArray(input []uint64) []F {
 	}
 	return output
 }
+
+func Uint64ArrayToQuadraticExtensionArray(input [][]uint64) []QuadraticExtension {
+	var output []QuadraticExtension
+	for i := 0; i < len(input); i++ {
+		output = append(output, [2]F{NewFieldElement(input[i][0]), NewFieldElement(input[i][1])})
+	}
+	return output
+}