[sepolia-alpha] Update scalar post ecotone

sepolia-alpha/2024-05-15-update-scalars/.env

@@ -0,0 +1,23 @@
+OP_COMMIT=c87a469d7d679e8a4efbace56c3646b925bcc009
+BASE_CONTRACTS_COMMIT=5d98dab6a4f3ba60713a17417a2df7a17d77c52f
+
+# https://sepolia.etherscan.io/address/0x7F67DC4959cb3E532B10A99F41bDD906C46FdFdE
+L1_SYSTEM_CONFIG_ADDRESS=0x7F67DC4959cb3E532B10A99F41bDD906C46FdFdE 
+OWNER_ADDRESS=0xAf6E0E871f38c7B653700F7CbAEDafaa2784D430
+
+# decode sepolia-prod setting
+# > ./main --decode 452312848583266388373324160190187140051835877600158453279134021569375896653 
+# base fee scalar     : 1101
+# blob base fee scalar: 659851
+# v1 hex encoding  : 0x010000000000000000000000000000000000000000000000000a118b0000044d
+# uint value for the 'scalar' parameter in SystemConfigProxy.setGasConfig():
+# For Sepolia prod: SCALAR=452312848583266388373324160190187140051835877600158453279134021569375896653
+
+# encode sepolia-alpha setting
+# scalar = sepolia-prod-scalar * 1.6 * 6, blob-scalar = sepolia-prod-blob-scalar * 1.6
+# > ./main --scalar 10570 --blob-scalar 1055761
+# base fee scalar     : 10570
+# blob base fee scalar: 1055761
+# v1 hex encoding  : 0x01000000000000000000000000000000000000000000000000101c110000294a
+# uint value for the 'scalar' parameter in SystemConfigProxy.setGasConfig():
+SCALAR=452312848583266388373324160190187140051835877600158453279135721989878065482

sepolia-alpha/2024-05-15-update-scalars/Makefile

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+include ../../Makefile
+include ../.env
+include .env
+
+# Update Gas Config command
+
+.PHONY: update-gas-config
+update-gas-config:
+	@forge script --rpc-url $(L1_RPC_URL) UpdateGasConfigSepolia --private-key $(PRIVATE_KEY)  --broadcast

sepolia-alpha/2024-05-15-update-scalars/foundry.toml

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+[profile.default]
+src = 'src'
+out = 'out'
+libs = ['lib']
+broadcast = 'records'
+fs_permissions = [ {access = "read-write", path = "./"} ]
+optimizer = true
+optimizer_runs = 999999
+solc_version = "0.8.15"
+via-ir = true
+remappings = [
+    '@eth-optimism-bedrock/=lib/optimism/packages/contracts-bedrock/',
+    '@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts',
+    '@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts',
+    '@rari-capital/solmate/=lib/solmate/',
+    '@base-contracts/=lib/base-contracts',
+    'solady/=lib/solady/src/'
+]
+
+# See more config options https://github.com/foundry-rs/foundry/tree/master/config

sepolia-alpha/2024-05-15-update-scalars/script/UpdateGasConfig.s.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import {SystemConfig} from "@eth-optimism-bedrock/src/L1/SystemConfig.sol";
+import "forge-std/Script.sol";
+
+contract UpdateGasConfigSepolia is Script {
+
+    address internal L1_SYSTEM_CONFIG = vm.envAddress("L1_SYSTEM_CONFIG_ADDRESS");
+    uint256 internal SCALAR = vm.envUint("SCALAR");
+    address internal OWNER = vm.envAddress("OWNER_ADDRESS");
+
+    function _postCheck() internal view {
+        require(SystemConfig(L1_SYSTEM_CONFIG).scalar() == SCALAR);
+        require(SystemConfig(L1_SYSTEM_CONFIG).overhead() == 0);
+    }
+
+    function run() public {
+        vm.startBroadcast(OWNER);
+        SystemConfig(L1_SYSTEM_CONFIG).setGasConfig(0, SCALAR); 
+        _postCheck();
+        vm.stopBroadcast(); 
+    }
+}