diff --git a/.gitea/workflows/tests.yml b/.gitea/workflows/tests.yml
index 8f1f1e9..db3f398 100644
--- a/.gitea/workflows/tests.yml
+++ b/.gitea/workflows/tests.yml
@@ -48,18 +48,18 @@ jobs:
       - name: Run basic integration test
         env:
           DATABASE_TYPE: postgres
-          LEVELDB_PATH: ./fixtures/chaindata/_data/small
-          LEVELDB_ANCIENT: ./fixtures/chaindata/_data/small/ancient
+          LEVELDB_PATH: ./fixtures/chaindata/_data/small2
+          LEVELDB_ANCIENT: ./fixtures/chaindata/_data/small2/ancient
           LOG_FILE: ./server-log
-          ETH_GENESIS_BLOCK: "0x37cbb63c7150a7b60f2878433963ed8ba7e5f82fb2683ec7a945c974e1cf4e05"
-        timeout-minutes: 30
+          ETH_GENESIS_BLOCK: "0x8a3c7cddacbd1ab4ec1b03805fa2a287f3a75e43d87f4f987fcc399f5c042614"
+        timeout-minutes: 20
         run: |
           ./eth-statediff-service --config ./test/ci-config.toml serve &
           sleep 10
 
-          ./scripts/request-range.sh 0 32 || (E=$?; cat $LOG_FILE; exit $E)
+          ./scripts/request-range.sh 0 10 || (E=$?; cat $LOG_FILE; exit $E)
 
-          until grep "Finished processing block 32" $LOG_FILE
+          until grep "Finished processing block 10" $LOG_FILE
           do sleep 1; done
 
           count_results() {
@@ -68,9 +68,11 @@ jobs:
                   psql -tA cerc_testing -U vdbm -c "$query"
           }
           set -x
-          [[ "$(count_results eth.header_cids)" = 33 ]]
-          [[ "$(count_results eth.state_cids)" = 21 ]]
-          [[ "$(count_results eth.storage_cids)" = 18 ]]
+          [[ "$(count_results eth.header_cids)" = 11 ]]
+          [[ "$(count_results eth.state_cids)" = 287 ]]
+          [[ "$(count_results eth.storage_cids)" = 31 ]]
+          [[ "$(count_results eth.transaction_cids)" = 144 ]]
+          [[ "$(count_results eth.receipt_cids)" = 144 ]]
 
   compliance-test:
     name: Run compliance tests
diff --git a/pkg/service.go b/pkg/service.go
index 6785079..1ba687b 100644
--- a/pkg/service.go
+++ b/pkg/service.go
@@ -405,10 +405,17 @@ func (sds *Service) writeStateDiff(block *types.Block, parentRoot common.Hash, p
 		return err
 	}
 	// defer handling of commit/rollback for any return case
+	defer tx.RollbackOnFailure(err)
+
+	var nodeMtx, ipldMtx sync.Mutex
 	output := func(node sdtypes.StateLeafNode) error {
+		nodeMtx.Lock()
+		defer nodeMtx.Unlock()
 		return sds.indexer.PushStateNode(tx, node, block.Hash().String())
 	}
-	codeOutput := func(c sdtypes.IPLD) error {
+	ipldOutput := func(c sdtypes.IPLD) error {
+		ipldMtx.Lock()
+		defer ipldMtx.Unlock()
 		return sds.indexer.PushIPLD(tx, c)
 	}
 	prom.SetTimeMetric(prom.T_BLOCK_PROCESSING, time.Now().Sub(t))
@@ -418,7 +425,7 @@ func (sds *Service) writeStateDiff(block *types.Block, parentRoot common.Hash, p
 		OldStateRoot: parentRoot,
 		BlockNumber:  block.Number(),
 		BlockHash:    block.Hash(),
-	}, params, output, codeOutput)
+	}, params, output, ipldOutput)
 	prom.SetTimeMetric(prom.T_STATE_PROCESSING, time.Now().Sub(t))
 	t = time.Now()
 	err = tx.Submit()
diff --git a/scripts/compare-statediffs.sh b/scripts/compare-statediffs.sh
index 9442862..d0b6687 100755
--- a/scripts/compare-statediffs.sh
+++ b/scripts/compare-statediffs.sh
@@ -48,7 +48,6 @@ export DATABASE_PASSWORD="password"
 export ETH_NODE_ID=test-node
 export ETH_CLIENT_NAME=test-client
 export ETH_NETWORK_ID=test-network
-export ETH_CHAIN_ID=4242
 
 export SERVICE_HTTP_PATH='127.0.0.1:8545'
 export LOG_LEVEL=debug
@@ -65,6 +64,7 @@ clear_table() {
 }
 
 tables=(
+  eth.header_cids
   eth.log_cids
   eth.receipt_cids
   eth.state_cids
@@ -86,6 +86,7 @@ run_service() {
   service_binary=$1
   service_output_dir=$2
 
+  mkdir -p $service_output_dir
   $service_binary serve &
 
   until grep "HTTP endpoint opened" $LOG_FILE
diff --git a/test/ci-chain.json b/test/ci-chain.json
index d2ee2f5..44d2cd2 100644
--- a/test/ci-chain.json
+++ b/test/ci-chain.json
@@ -1,5 +1,5 @@
 {
-  "chainId": 41337,
+  "chainId": 1212,
   "homesteadBlock": 0,
   "eip150Block": 0,
   "eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
@@ -9,6 +9,11 @@
   "constantinopleBlock": 0,
   "petersburgBlock": 0,
   "istanbulBlock": 0,
+  "berlinBlock": 0,
+  "londonBlock": 0,
+  "mergeForkBlock": 0,
+  "terminalTotalDifficulty": 0,
+  "mergeNetsplitBlock": 0,
   "clique": {
     "period": 5,
     "epoch": 30000