diff --git a/optimism/scripts/mainnet.json b/optimism/scripts/mainnet.json
new file mode 100644
index 00000000..2d755f8d
--- /dev/null
+++ b/optimism/scripts/mainnet.json
@@ -0,0 +1,43 @@
+{
+  "finalSystemOwner": "0x9BA6e03D8B90dE867373Db8cF1A58d2F7F006b3A",
+  "controller": "0x9BA6e03D8B90dE867373Db8cF1A58d2F7F006b3A",
+  "portalGuardian": "0x9BA6e03D8B90dE867373Db8cF1A58d2F7F006b3A",
+  "l1StartingBlockTag": "0x438335a20d98863a4c0c97999eb2481921ccd28553eac6f913af7c12aec04108",
+  "l1ChainID": 1,
+  "l2ChainID": 10,
+  "l2BlockTime": 2,
+  "maxSequencerDrift": 600,
+  "sequencerWindowSize": 3600,
+  "channelTimeout": 300,
+  "p2pSequencerAddress": "0xAAAA45d9549EDA09E70937013520214382Ffc4A2",
+  "batchInboxAddress": "0xff00000000000000000000000000000000000010",
+  "batchSenderAddress": "0x6887246668a3b87F54DeB3b94Ba47a6f63F32985",
+  "l2OutputOracleSubmissionInterval": 1800,
+  "l2OutputOracleStartingTimestamp": 1686068903,
+  "l2OutputOracleStartingBlockNumber": 105235063,
+  "l2OutputOracleProposer": "0x473300df21D047806A082244b417f96b32f13A33",
+  "l2OutputOracleChallenger": "0x9BA6e03D8B90dE867373Db8cF1A58d2F7F006b3A",
+  "finalizationPeriodSeconds": 604800,
+  "proxyAdminOwner": "0x7871d1187A97cbbE40710aC119AA3d412944e4Fe",
+  "baseFeeVaultRecipient": "0xa3d596EAfaB6B13Ab18D40FaE1A962700C84ADEa",
+  "l1FeeVaultRecipient": "0xa3d596EAfaB6B13Ab18D40FaE1A962700C84ADEa",
+  "sequencerFeeVaultRecipient": "0xa3d596EAfaB6B13Ab18D40FaE1A962700C84ADEa",
+  "baseFeeVaultMinimumWithdrawalAmount": "0x8ac7230489e80000",
+  "l1FeeVaultMinimumWithdrawalAmount": "0x8ac7230489e80000",
+  "sequencerFeeVaultMinimumWithdrawalAmount": "0x8ac7230489e80000",
+  "baseFeeVaultWithdrawalNetwork": 0,
+  "l1FeeVaultWithdrawalNetwork": 0,
+  "sequencerFeeVaultWithdrawalNetwork": 0,
+  "enableGovernance": true,
+  "governanceTokenName": "Optimism",
+  "governanceTokenSymbol": "OP",
+  "governanceTokenOwner": "0x5C4e7Ba1E219E47948e6e3F55019A647bA501005",
+  "l2GenesisBlockGasLimit": "0x1c9c380",
+  "l2GenesisBlockCoinbase": "0x4200000000000000000000000000000000000011",
+  "l2GenesisBlockBaseFeePerGas": "0x3b9aca00",
+  "gasPriceOracleOverhead": 188,
+  "gasPriceOracleScalar": 684000,
+  "eip1559Denominator": 50,
+  "eip1559Elasticity": 6,
+  "l2GenesisRegolithTimeOffset": "0x0"
+}
diff --git a/optimism/scripts/op-node-start.sh b/optimism/scripts/op-node-start.sh
index 791b8821..f3cb79da 100755
--- a/optimism/scripts/op-node-start.sh
+++ b/optimism/scripts/op-node-start.sh
@@ -8,7 +8,7 @@ echo $OP_NODE__RPC_TYPE
 exec op-node \
   --l1=$OPTIMISM_L1_URL \
   --l2=http://op-erigon:8551 \
-  --network=ethereum \
+  --rollup.config=/scripts/mainnet.json
   --rpc.addr=0.0.0.0 \
   --rpc.port=9545 \
   --l2.jwt-secret=/jwtsecret \