diff --git a/.env.example b/.env.example
index 6edb20be5b..f2ba870ed4 100644
--- a/.env.example
+++ b/.env.example
@@ -21,11 +21,18 @@ SCR_STANDARD_CHAIN_CANDIDATE=false
 # It is defined for convenience and reuse by other vars below
 SCR_MONOREPO_DIR=../optimism # path to local "ethereum-optimism/optimism" monorepo
 
-# The following vars point to three input files required for adding a chain
+# The following vars point to four input files required for adding a chain
 # Data will be scraped from these files in order to construct the required registry data
+# and for genesis validation purposes.
 SCR_DEPLOYMENTS_DIR=${SCR_MONOREPO_DIR}/packages/contracts-bedrock/deployments/getting-started
 SCR_ROLLUP_CONFIG=${SCR_MONOREPO_DIR}/op-node/rollup.json
 SCR_GENESIS=${SCR_MONOREPO_DIR}/op-node/genesis.json
+SCR_DEPLOY_CONFIG=${SCR_MONOREPO_DIR}/packages/contracts-bedrock/deploy-config/getting-started.json
+
+# This is the commit in the https://github.com/ethereum-optimism/optimism/ repo
+# at which the chain's genesis was created. This is necessary to have our validation checks
+# recreate the genesis file using identical source code
+SCR_GENESIS_CREATION_COMMIT=""
 
 # Your chain's endpoint for ETHEREUM JSON-RPC requests
 SCR_PUBLIC_RPC="http://awe.some.rpc" # new OP Stack L2 RPC URL
diff --git a/add-chain/e2e_test.go b/add-chain/e2e_test.go
index 885cd1fcd5..e79d0fadbb 100644
--- a/add-chain/e2e_test.go
+++ b/add-chain/e2e_test.go
@@ -10,9 +10,9 @@ import (
 )
 
 const (
-	addressDir             = "../superchain/extra/addresses/sepolia/"
-	configDir              = "../superchain/configs/sepolia/"
-	genesisSystemConfigDir = "../superchain/extra/genesis-system-configs/sepolia/"
+	addressDir          = "../superchain/extra/addresses/sepolia/"
+	configDir           = "../superchain/configs/sepolia/"
+	validationInputsDir = "../validation/genesis/validation-inputs"
 )
 
 var tests = []struct {
@@ -171,7 +171,6 @@ func checkConfigTOML(t *testing.T, testName, chainShortName string) {
 func cleanupTestFiles(t *testing.T, chainShortName string) {
 	paths := []string{
 		addressDir + chainShortName + ".json",
-		genesisSystemConfigDir + chainShortName + ".json",
 		configDir + chainShortName + ".toml",
 	}
 
diff --git a/add-chain/flags/flags.go b/add-chain/flags/flags.go
index 53fc057b90..ec127405e9 100644
--- a/add-chain/flags/flags.go
+++ b/add-chain/flags/flags.go
@@ -70,6 +70,18 @@ var (
 		Usage:    "Filepath to rollup.json input file",
 		Required: true,
 	}
+	DeployConfigFlag = &cli.StringFlag{
+		Name:     "deploy-config",
+		EnvVars:  prefixEnvVars("DEPLOY_CONFIG"),
+		Usage:    "Filepath to deploy-config json input file",
+		Required: true,
+	}
+	GenesisCreationCommit = &cli.StringFlag{
+		Name:     "genesis-creation-commit",
+		EnvVars:  prefixEnvVars("GENESIS_CREATION_COMMIT"),
+		Usage:    "Commit in the https://github.com/ethereum-optimism/optimism/ repo at which the chain's genesis was created",
+		Required: true,
+	}
 	GenesisFlag = &cli.StringFlag{
 		Name:     "genesis",
 		EnvVars:  prefixEnvVars("GENESIS"),
diff --git a/add-chain/go.mod b/add-chain/go.mod
index 27e0efb288..afd28f1d9f 100644
--- a/add-chain/go.mod
+++ b/add-chain/go.mod
@@ -4,12 +4,15 @@ go 1.21
 
 replace github.com/ethereum-optimism/superchain-registry/superchain => ../superchain
 
+replace github.com/ethereum-optimism/superchain-registry/validation => ../validation
+
 replace github.com/ethereum/go-ethereum => github.com/ethereum-optimism/op-geth v1.101407.0-rc.1.0.20240812224053-8d99ca68bb1a
 
 require (
 	github.com/BurntSushi/toml v1.4.0
 	github.com/ethereum-optimism/optimism v1.9.1-0.20240814195148-0bb2ff57c813
 	github.com/ethereum-optimism/superchain-registry/superchain v0.0.0-20240814192743-ea7e768a02a6
+	github.com/ethereum-optimism/superchain-registry/validation v0.0.0-00010101000000-000000000000
 	github.com/ethereum/go-ethereum v1.14.7
 	github.com/google/go-cmp v0.6.0
 	github.com/joho/godotenv v1.5.1
diff --git a/add-chain/main.go b/add-chain/main.go
index b93e9f637f..44c96d24b8 100644
--- a/add-chain/main.go
+++ b/add-chain/main.go
@@ -3,16 +3,19 @@ package main
 import (
 	"fmt"
 	"os"
+	"path"
 	"path/filepath"
 	"runtime"
 	"strconv"
 	"strings"
 
+	"github.com/BurntSushi/toml"
 	"github.com/ethereum-optimism/optimism/op-e2e/bindings"
 	"github.com/ethereum-optimism/superchain-registry/add-chain/cmd"
 	"github.com/ethereum-optimism/superchain-registry/add-chain/config"
 	"github.com/ethereum-optimism/superchain-registry/add-chain/flags"
 	"github.com/ethereum-optimism/superchain-registry/superchain"
+	"github.com/ethereum-optimism/superchain-registry/validation/genesis"
 	"github.com/ethereum/go-ethereum/accounts/abi/bind"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/ethclient"
@@ -34,6 +37,8 @@ var app = &cli.App{
 		flags.RollupConfigFlag,
 		flags.DeploymentsDirFlag,
 		flags.StandardChainCandidateFlag,
+		flags.GenesisCreationCommit,
+		flags.DeployConfigFlag,
 	},
 	Action: entrypoint,
 	Commands: []*cli.Command{
@@ -87,6 +92,8 @@ func entrypoint(ctx *cli.Context) error {
 
 	chainName := ctx.String(flags.ChainNameFlag.Name)
 	rollupConfigPath := ctx.String(flags.RollupConfigFlag.Name)
+	deployConfigPath := ctx.String(flags.DeployConfigFlag.Name)
+	genesisCreationCommit := ctx.String(flags.GenesisCreationCommit.Name)
 	deploymentsDir := ctx.String(flags.DeploymentsDirFlag.Name)
 	chainShortName := ctx.String(flags.ChainShortNameFlag.Name)
 	if chainShortName == "" {
@@ -107,6 +114,8 @@ func entrypoint(ctx *cli.Context) error {
 	fmt.Printf("Monorepo dir:                   %s\n", monorepoDir)
 	fmt.Printf("Deployments directory:          %s\n", deploymentsDir)
 	fmt.Printf("Rollup config filepath:         %s\n", rollupConfigPath)
+	fmt.Printf("Deploy config filepath:         %s\n", deployConfigPath)
+	fmt.Printf("Genesis creation commit:        %s\n", genesisCreationCommit)
 	fmt.Printf("Public RPC endpoint:            %s\n", publicRPC)
 	fmt.Printf("Sequencer RPC endpoint:         %s\n", sequencerRPC)
 	fmt.Printf("Block Explorer:                 %s\n", explorer)
@@ -166,7 +175,29 @@ func entrypoint(ctx *cli.Context) error {
 		return fmt.Errorf("error generating chain config .yaml file: %w", err)
 	}
 
-	fmt.Printf("Wrote config for new chain with identifier %s", rollupConfig.Identifier())
+	fmt.Printf("✅ Wrote config for new chain with identifier %s", rollupConfig.Identifier())
+
+	folderName := fmt.Sprintf("%d", rollupConfig.ChainID)
+	if runningTests := os.Getenv("SCR_RUN_TESTS"); runningTests == "true" {
+		folderName = folderName + "-test"
+	}
+	genesisValidationInputsDir := filepath.Join(superchainRepoRoot, "validation", "genesis", "validation-inputs", folderName)
+	err = os.MkdirAll(genesisValidationInputsDir, os.ModePerm)
+	if err != nil {
+		return err
+	}
+	err = copyDeployConfigFile(deployConfigPath, genesisValidationInputsDir)
+	if err != nil {
+		return fmt.Errorf("error copying deploy-config json file: %w", err)
+	}
+	fmt.Printf("✅ Copied deploy-config json file to validation module")
+
+	err = writeGenesisValidationMetadata(genesisCreationCommit, genesisValidationInputsDir)
+	if err != nil {
+		return fmt.Errorf("error writing genesis validation metadata file: %w", err)
+	}
+	fmt.Printf("✅ Wrote genesis validation metadata file")
+
 	return nil
 }
 
@@ -227,3 +258,32 @@ func getGasPayingToken(l1rpcURl string, SystemConfigAddress superchain.Address)
 
 	return (*superchain.Address)(&result.Addr), nil
 }
+
+func copyDeployConfigFile(sourcePath string, targetDir string) error {
+	data, err := os.ReadFile(sourcePath)
+	if err != nil {
+		return err
+	}
+	return os.WriteFile(path.Join(targetDir, "deploy-config.json"), data, os.ModePerm)
+}
+
+func writeGenesisValidationMetadata(commit string, targetDir string) error {
+	// Define default metadata params:
+	// These may not be sufficient to make the genesis validation work,
+	// but we address that with some manual trial-and-error intervention
+	// involving OPLabs engineers after the add-chain command runs.
+	const defaultNodeVersion = "18.12.1"
+	const defaultMonorepoBuildCommand = "pnpm"
+	const defaultGenesisCreationCommand = "opnode1"
+	vm := genesis.ValidationMetadata{
+		GenesisCreationCommit:  commit,
+		NodeVersion:            defaultNodeVersion,
+		MonorepoBuildCommand:   defaultMonorepoBuildCommand,
+		GenesisCreationCommand: defaultGenesisCreationCommand,
+	}
+	data, err := toml.Marshal(vm)
+	if err != nil {
+		return err
+	}
+	return os.WriteFile(path.Join(targetDir, "meta.toml"), data, os.ModePerm)
+}
diff --git a/add-chain/testdata/.env.test b/add-chain/testdata/.env.test
index d5291cdde1..13c6763cfb 100644
--- a/add-chain/testdata/.env.test
+++ b/add-chain/testdata/.env.test
@@ -4,6 +4,8 @@ SCR_SUPERCHAIN_TARGET=sepolia # L1 chain name
 SCR_MONOREPO_DIR=./testdata/monorepo
 SCR_DEPLOYMENTS_DIR=${SCR_MONOREPO_DIR}/deployments
 SCR_ROLLUP_CONFIG=${SCR_MONOREPO_DIR}/op-node/rollup.json
+SCR_GENESIS_CREATION_COMMIT=somecommit
+SCR_DEPLOY_CONFIG=${SCR_MONOREPO_DIR}/deploy-config/sepolia.json
 SCR_PUBLIC_RPC="http://awe.some.rpc" # L2 RPC URL
 SCR_SEQUENCER_RPC="http://awe.some.seq.rpc"
 SCR_EXPLORER="https://awesomescan.org" # L2 block explorer URL
diff --git a/add-chain/testdata/monorepo/deploy-config/sepolia.json b/add-chain/testdata/monorepo/deploy-config/sepolia.json
new file mode 100644
index 0000000000..bcc13611fe
--- /dev/null
+++ b/add-chain/testdata/monorepo/deploy-config/sepolia.json
@@ -0,0 +1,41 @@
+{
+  "finalSystemOwner": "0xfd1D2e729aE8eEe2E146c033bf4400fE75284301",
+  "portalGuardian": "0xfd1D2e729aE8eEe2E146c033bf4400fE75284301",
+  "l1StartingBlockTag": "0x70e5634d09793b1cfaa7d0a2a5d3289a3b2308de1e82f682b4f817fc670f9797",
+  "l1ChainID": 11155111,
+  "l2ChainID": 11155420,
+  "l2BlockTime": 2,
+  "maxSequencerDrift": 600,
+  "sequencerWindowSize": 3600,
+  "channelTimeout": 300,
+  "p2pSequencerAddress": "0x715b7219D986641DF9eFd9C7Ef01218D528e19ec",
+  "batchInboxAddress": "0xff00000000000000000000000000000011155420",
+  "batchSenderAddress": "0x7431310e026B69BFC676C0013E12A1A11411EEc9",
+  "l2OutputOracleSubmissionInterval": 120,
+  "l2OutputOracleStartingBlockNumber": 0,
+  "l2OutputOracleStartingTimestamp": 0,
+  "l2OutputOracleProposer": "0x02b1786A85Ec3f71fBbBa46507780dB7cF9014f6",
+  "l2OutputOracleChallenger": "0xfd1D2e729aE8eEe2E146c033bf4400fE75284301",
+  "finalizationPeriodSeconds": 12,
+  "proxyAdminOwner": "0xfd1D2e729aE8eEe2E146c033bf4400fE75284301",
+  "baseFeeVaultRecipient": "0xfd1D2e729aE8eEe2E146c033bf4400fE75284301",
+  "l1FeeVaultRecipient": "0xfd1D2e729aE8eEe2E146c033bf4400fE75284301",
+  "sequencerFeeVaultRecipient": "0xfd1D2e729aE8eEe2E146c033bf4400fE75284301",
+  "baseFeeVaultMinimumWithdrawalAmount": "0x8ac7230489e80000",
+  "l1FeeVaultMinimumWithdrawalAmount": "0x8ac7230489e80000",
+  "sequencerFeeVaultMinimumWithdrawalAmount": "0x8ac7230489e80000",
+  "baseFeeVaultWithdrawalNetwork": 0,
+  "l1FeeVaultWithdrawalNetwork": 0,
+  "sequencerFeeVaultWithdrawalNetwork": 0,
+  "gasPriceOracleOverhead": 188,
+  "gasPriceOracleScalar": 684000,
+  "enableGovernance": true,
+  "governanceTokenSymbol": "OP",
+  "governanceTokenName": "Optimism",
+  "governanceTokenOwner": "0xfd1D2e729aE8eEe2E146c033bf4400fE75284301",
+  "l2GenesisBlockGasLimit": "0x1c9c380",
+  "l2GenesisBlockBaseFeePerGas": "0x3b9aca00",
+  "eip1559Denominator": 50,
+  "eip1559Elasticity": 6,
+  "l2GenesisRegolithTimeOffset": "0x0"
+}
diff --git a/justfile b/justfile
index 4172e3b724..b6ff2c7b03 100644
--- a/justfile
+++ b/justfile
@@ -59,6 +59,7 @@ promotion-test:
 clean-add-chain:
 	rm -f superchain/configs/sepolia/testchain_*.toml
 	rm -f superchain/extra/sepolia/testchain_*.json.gz
+	rm -rf -- validation/genesis/validation-inputs/*-test/
 
 # Tidying all go.mod files
 tidy-all: tidy-add-chain tidy-superchain tidy-validation
diff --git a/validation/.gitignore b/validation/.gitignore
index a658e35344..8a5e1f6911 100644
--- a/validation/.gitignore
+++ b/validation/.gitignore
@@ -1,2 +1,6 @@
+# diff tool artifacts
 generate-rollup-config/output-*
 generate-genesis/output-*
+
+# test output artifacts
+genesis/validation-inputs/*-test
diff --git a/validation/genesis/genesis-predeploy_test.go b/validation/genesis/genesis-predeploy_test.go
index 9eab1223d4..981599dec4 100644
--- a/validation/genesis/genesis-predeploy_test.go
+++ b/validation/genesis/genesis-predeploy_test.go
@@ -111,9 +111,9 @@ func testGenesisPredeploys(t *testing.T, chain *ChainConfig) {
 	gotData, err := json.MarshalIndent(g.Alloc, "", " ")
 	require.NoError(t, err)
 
-	err = os.WriteFile(path.Join(monorepoDir, "want-alloc.json"), expectedData, 0o777)
+	err = os.WriteFile(path.Join(monorepoDir, "want-alloc.json"), expectedData, os.ModePerm)
 	require.NoError(t, err)
-	err = os.WriteFile(path.Join(monorepoDir, "got-alloc.json"), gotData, 0o777)
+	err = os.WriteFile(path.Join(monorepoDir, "got-alloc.json"), gotData, os.ModePerm)
 	require.NoError(t, err)
 
 	require.Equal(t, string(expectedData), string(gotData))
@@ -135,7 +135,7 @@ func writeDeployments(chainId uint64, directory string) error {
 		return err
 	}
 
-	err = os.WriteFile(path.Join(directory, ".deploy"), data, 0o777)
+	err = os.WriteFile(path.Join(directory, ".deploy"), data, os.ModePerm)
 	if err != nil {
 		return err
 	}
diff --git a/validation/genesis/genesis.go b/validation/genesis/genesis.go
index 6e70f73279..04f8f859a6 100644
--- a/validation/genesis/genesis.go
+++ b/validation/genesis/genesis.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"path"
 	"strconv"
+	"strings"
 
 	"github.com/BurntSushi/toml"
 )
@@ -40,6 +41,10 @@ func init() {
 			panic(fmt.Errorf("failed to decode metadata file: %w", err))
 		}
 
+		if strings.HasSuffix(s.Name(), "-test") {
+			continue
+		}
+
 		chainID, err := strconv.Atoi(s.Name())
 		if err != nil {
 			panic(fmt.Errorf("failed to decode chain id from dir name: %w", err))