diff --git a/da/celestia/celestia.go b/da/celestia/celestia.go
index 81cfd83b88..7162a0510d 100644
--- a/da/celestia/celestia.go
+++ b/da/celestia/celestia.go
@@ -4,11 +4,9 @@ import (
 	"context"
 	"encoding/hex"
 	"encoding/json"
-	"fmt"
 	"strings"
 	"time"
 
-	"cosmossdk.io/math"
 	"github.com/gogo/protobuf/proto"
 	ds "github.com/ipfs/go-datastore"
 
@@ -99,7 +97,7 @@ func (c *DataAvailabilityLayerClient) SubmitBlocks(ctx context.Context, blocks [
 		blobs[blockIndex] = blockBlob
 	}
 
-	txResponse, err := c.rpc.State.SubmitPayForBlob(ctx, math.NewInt(c.config.Fee), c.config.GasLimit, blobs)
+	dataLayerHeight, err := c.rpc.Blob.Submit(ctx, blobs)
 	if err != nil {
 		return da.ResultSubmitBlocks{
 			BaseResult: da.BaseResult{
@@ -109,24 +107,12 @@ func (c *DataAvailabilityLayerClient) SubmitBlocks(ctx context.Context, blocks [
 		}
 	}
 
-	c.logger.Debug("successfully submitted PayForBlob transaction",
-		"fee", c.config.Fee, "gasLimit", c.config.GasLimit,
-		"daHeight", txResponse.Height, "daTxHash", txResponse.TxHash)
-
-	if txResponse.Code != 0 {
-		return da.ResultSubmitBlocks{
-			BaseResult: da.BaseResult{
-				Code:    da.StatusError,
-				Message: fmt.Sprintf("Codespace: '%s', Code: %d, Message: %s", txResponse.Codespace, txResponse.Code, txResponse.RawLog),
-			},
-		}
-	}
+	c.logger.Debug("successfully submitted blobs", "daHeight", dataLayerHeight)
 
 	return da.ResultSubmitBlocks{
 		BaseResult: da.BaseResult{
 			Code:     da.StatusSuccess,
-			Message:  "tx hash: " + txResponse.TxHash,
-			DAHeight: uint64(txResponse.Height),
+			DAHeight: uint64(dataLayerHeight),
 		},
 	}
 }
diff --git a/da/celestia/mock/messages.go b/da/celestia/mock/messages.go
deleted file mode 100644
index 961476e8ff..0000000000
--- a/da/celestia/mock/messages.go
+++ /dev/null
@@ -1,13 +0,0 @@
-package mock
-
-// This code is extracted from celestia-app. It's here to build shares from messages (serialized blocks).
-// TODO(tzdybal): if we stop using `/namespaced_shares` we can get rid of this file.
-
-// Share contains the raw share data without the corresponding namespace.
-type Share []byte
-
-// NamespacedShare extends a Share with the corresponding namespace.
-type NamespacedShare struct {
-	Share
-	ID []byte
-}
diff --git a/da/celestia/mock/server.go b/da/celestia/mock/server.go
index 94ab208111..160dd4508a 100644
--- a/da/celestia/mock/server.go
+++ b/da/celestia/mock/server.go
@@ -14,7 +14,6 @@ import (
 
 	"github.com/rollkit/celestia-openrpc/types/blob"
 	"github.com/rollkit/celestia-openrpc/types/header"
-	"github.com/rollkit/celestia-openrpc/types/sdk"
 	mockda "github.com/rollkit/rollkit/da/mock"
 	"github.com/rollkit/rollkit/log"
 	"github.com/rollkit/rollkit/store"
@@ -197,20 +196,20 @@ func (s *Server) rpc(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 		s.writeResponse(w, bytes)
-	case "state.SubmitPayForBlob":
+	case "blob.Submit":
 		var params []interface{}
 		err := json.Unmarshal(req.Params, &params)
 		if err != nil {
 			s.writeError(w, err)
 			return
 		}
-		if len(params) != 3 {
-			s.writeError(w, errors.New("expected 3 params: fee (uint64), gaslimit (uint64), data (base64 string)"))
+		if len(params) != 1 {
+			s.writeError(w, errors.New("expected 1 param: data (base64 string)"))
 			return
 		}
 
-		blocks := make([]*types.Block, len(params[2].([]interface{})))
-		for i, data := range params[2].([]interface{}) {
+		blocks := make([]*types.Block, len(params[0].([]interface{})))
+		for i, data := range params[0].([]interface{}) {
 			blockBase64 := data.(map[string]interface{})["data"].(string)
 			blockData, err := base64.StdEncoding.DecodeString(blockBase64)
 			if err != nil {
@@ -228,11 +227,9 @@ func (s *Server) rpc(w http.ResponseWriter, r *http.Request) {
 		res := s.mock.SubmitBlocks(r.Context(), blocks)
 		resp := &response{
 			Jsonrpc: "2.0",
-			Result: &sdk.TxResponse{
-				Height: int64(res.DAHeight),
-			},
-			ID:    req.ID,
-			Error: nil,
+			Result:  int64(res.DAHeight),
+			ID:      req.ID,
+			Error:   nil,
 		}
 		bytes, err := json.Marshal(resp)
 		if err != nil {
diff --git a/go.mod b/go.mod
index 919f88722b..eadd1b8255 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,6 @@ module github.com/rollkit/rollkit
 go 1.20
 
 require (
-	cosmossdk.io/math v1.0.1
 	github.com/celestiaorg/go-header v0.2.13
 	github.com/celestiaorg/nmt v0.17.0
 	github.com/celestiaorg/rsmt2d v0.10.0
@@ -37,6 +36,7 @@ require (
 )
 
 require (
+	cosmossdk.io/math v1.0.1 // indirect
 	github.com/benbjohnson/clock v1.3.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/btcsuite/btcd/btcec/v2 v2.3.2 // indirect