diff --git a/da/avail/avail.go b/da/avail/avail.go
index 42b0c9e47..d8536cb0b 100644
--- a/da/avail/avail.go
+++ b/da/avail/avail.go
@@ -18,11 +18,12 @@ import (
 )
 
 type Config struct {
+	BaseURL    string  `json:"base_url"`
 	Seed       string  `json:"seed"`
 	ApiURL     string  `json:"api_url"`
 	Size       int     `json:"size"`
 	AppID      int     `json:"app_id"`
-	confidence float32 `json:"confidence"`
+	confidence float64 `json:"confidence"`
 }
 
 type DataAvailabilityLayerClient struct {
@@ -32,6 +33,17 @@ type DataAvailabilityLayerClient struct {
 	logger    log.Logger
 }
 
+type Confidence struct {
+	Block                uint32  `json:"block"`
+	Confidence           float64 `json:"confidence"`
+	SerialisedConfidence *string `json:"serialised_confidence,omitempty"`
+}
+
+type AppData struct {
+	Block      uint32 `json:"block"`
+	Extrinsics string `json:"extrinsics"`
+}
+
 var _ da.DataAvailabilityLayerClient = &DataAvailabilityLayerClient{}
 var _ da.BlockRetriever = &DataAvailabilityLayerClient{}
 
@@ -48,6 +60,7 @@ func (c *DataAvailabilityLayerClient) Init(namespaceID types.NamespaceID, config
 
 // Start prepares DataAvailabilityLayerClient to work.
 func (c *DataAvailabilityLayerClient) Start() error {
+
 	c.logger.Info("starting avail Data Availability Layer Client", "baseURL", c.config.ApiURL)
 
 	return nil
@@ -55,7 +68,9 @@ func (c *DataAvailabilityLayerClient) Start() error {
 
 // Stop stops DataAvailabilityLayerClient.
 func (c *DataAvailabilityLayerClient) Stop() error {
+
 	c.logger.Info("stopping Avail Data Availability Layer Client")
+
 	return nil
 }
 
@@ -72,7 +87,7 @@ func (c *DataAvailabilityLayerClient) SubmitBlock(ctx context.Context, block *ty
 		}
 	}
 
-	txHash, err := datasubmit.SubmitData(1000, c.config.ApiURL, c.config.Seed, c.config.AppID, data)
+	txHash, err := datasubmit.SubmitData(c.config.Size, c.config.ApiURL, c.config.Seed, c.config.AppID, data)
 
 	if err != nil {
 		return da.ResultSubmitBlock{
@@ -95,14 +110,8 @@ func (c *DataAvailabilityLayerClient) SubmitBlock(ctx context.Context, block *ty
 // CheckBlockAvailability queries DA layer to check data availability of block.
 func (c *DataAvailabilityLayerClient) CheckBlockAvailability(ctx context.Context, dataLayerHeight uint64) da.ResultCheckBlock {
 
-	type Confidence struct {
-		Block                uint32  `json:"block"`
-		Confidence           float64 `json:"confidence"`
-		SerialisedConfidence *string `json:"serialised_confidence,omitempty"`
-	}
-
 	blockNumber := dataLayerHeight
-	confidenceURL := fmt.Sprintf("http://localhost:7000/v1/confidence/%d", blockNumber)
+	confidenceURL := fmt.Sprintf(c.config.BaseURL+"/confidence/%d", blockNumber)
 
 	response, err := http.Get(confidenceURL)
 
@@ -141,16 +150,11 @@ func (c *DataAvailabilityLayerClient) CheckBlockAvailability(ctx context.Context
 
 func (c *DataAvailabilityLayerClient) RetrieveBlocks(ctx context.Context, dataLayerHeight uint64) da.ResultRetrieveBlocks {
 
-	type AppData struct {
-		Block      uint32 `json:"block"`
-		Extrinsics string `json:"extrinsics"`
-	}
-
 	blocks := make([]*types.Block, 1)
 	blocks[0] = new(types.Block)
 
 	blockNumber := dataLayerHeight
-	appDataURL := fmt.Sprintf("http://localhost:7000/v1/appdata/%d?decode=true", blockNumber)
+	appDataURL := fmt.Sprintf(c.config.BaseURL+"/appdata/%d?decode=true", blockNumber)
 	response, err := http.Get(appDataURL)
 	if err != nil {
 		return da.ResultRetrieveBlocks{