diff --git a/validation/standard/config.go b/validation/standard/config.go
index 39f019de0..8e8f2423d 100644
--- a/validation/standard/config.go
+++ b/validation/standard/config.go
@@ -4,7 +4,7 @@ import "github.com/ethereum-optimism/superchain-registry/superchain"
 
 // Config.Params is keyed by superchain target, e.g. "mainnet" or "sepolia" or "sepolia-dev-0"
 type ConfigType struct {
-	GenesisAlloc  map[superchain.Address]superchain.GenesisAccount `json:"alloc"`
+	Alloc         map[string][]superchain.Hash
 	Params        map[string]*Params
 	Roles         *Roles
 	MultisigRoles map[string]*MultisigRoles
diff --git a/validation/standard/init.go b/validation/standard/init.go
index d1e60bb02..1d3a40bf2 100644
--- a/validation/standard/init.go
+++ b/validation/standard/init.go
@@ -13,18 +13,15 @@ var standardConfigFile embed.FS
 
 func init() {
 
-	opSepoliaGenesis, err := superchain.LoadGenesis(11155420)
-	if err != nil {
-		panic(err)
-	}
-
 	Config = ConfigType{
-		GenesisAlloc:  opSepoliaGenesis.Alloc,
+		Alloc:         make(map[string][]superchain.Hash),
 		Params:        make(map[string]*Params),
 		Roles:         new(Roles),
 		MultisigRoles: make(map[string]*MultisigRoles),
 	}
 
+	decodeTOMLFileIntoConfig("standard-allocs.toml", &Config.Alloc)
+
 	decodeTOMLFileIntoConfig("standard-config-roles-universal.toml", Config.Roles)
 
 	networks := []string{"mainnet", "sepolia"}
@@ -40,7 +37,7 @@ func init() {
 	decodeTOMLFileIntoConfig("standard-versions.toml", &Versions)
 }
 
-func decodeTOMLFileIntoConfig[T Params | Roles | MultisigRoles | VersionTags](filename string, config *T) {
+func decodeTOMLFileIntoConfig[T Params | Roles | MultisigRoles | VersionTags | map[string][]superchain.Hash](filename string, config *T) {
 	data, err := fs.ReadFile(standardConfigFile, filename)
 	if err != nil {
 		panic(err)
diff --git a/validation/standard/standard-allocs.toml b/validation/standard/standard-allocs.toml
new file mode 100644
index 000000000..641b5794c
--- /dev/null
+++ b/validation/standard/standard-allocs.toml
@@ -0,0 +1,14 @@
+# Proxies
+"0x4200000000000000000000000000000000000000" = [ # LegacyMessagePasser Proxy
+    "0x1f958654ab06a152993e7a0ae7b6dbb0d4b19265cc9337b8789fe1353bd9dc35", # op sepolia
+    "0xfa8c9db6c6cab7108dea276f4cd09d575674eb0852c0fa3187e59e98ef977998", # base devnet 0
+    # "0x1f958654ab06a152993e7a0ae7b6dbb0d4b19265cc9337b8789fe1353bd9dc35",
+]
+# Implementations
+"0xc0D3C0d3C0d3C0D3c0d3C0d3c0D3C0d3c0d30000" = [ # LegacyMessagePasser Implementation
+    "0xd0c57b27c0149599951da23bcee9961707a75bbbf366771dc3261dd8290a7193", # op labs sepolia dev 0
+    "0x6a2619046f959bfd80513ca610c8357e44ada87541da78828bfa992dc40e0378", # zora sepolia
+    "0x74e5e83bf5526d5dfb64227d4664a88106bf04648d663cd8a95467a78995242f", # base devnet 0
+    "0xbed693ca28ddf7933272302afe2dedfd01d56dd67dbdb6f49f88a113f1663830", # mode 919
+]
+# Unproxied Predeploys
diff --git a/validation/superchain-genesis_test.go b/validation/superchain-genesis_test.go
index a7ace425f..a3cfd20ea 100644
--- a/validation/superchain-genesis_test.go
+++ b/validation/superchain-genesis_test.go
@@ -7,7 +7,6 @@ import (
 
 	. "github.com/ethereum-optimism/superchain-registry/superchain"
 	"github.com/ethereum-optimism/superchain-registry/validation/standard"
-	"github.com/google/go-cmp/cmp"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core"
@@ -60,13 +59,26 @@ func testGenesisPredeploys(t *testing.T, chain *ChainConfig) {
 	g, err := LoadGenesis(chain.ChainID)
 	require.NoError(t, err)
 
-	// Define a filter to ignore the "storage" field
-	opts := cmp.FilterPath(func(path cmp.Path) bool {
-		return path.Last().String() == ".Storage"
-	}, cmp.Ignore())
-
-	if diff := cmp.Diff(standard.Config.GenesisAlloc, g.Alloc, opts); diff != "" {
-		t.Errorf("genesis allocs (-) do not match standard allocs (+): %s", diff)
+	for address, listOfAcceptableCodeHashes := range standard.Config.Alloc {
+		ch := g.Alloc[MustHexToAddress(address)].CodeHash
+		require.Contains(t, listOfAcceptableCodeHashes, ch,
+			"account %s: codehash %s not present in list of acceptable codehases %s", address, ch, listOfAcceptableCodeHashes)
 	}
 
 }
+
+func TestGPs(t *testing.T) {
+	for _, chain := range OPChains {
+		chain := chain
+		t.Run(perChainTestName(chain), func(t *testing.T) {
+			t.Parallel()
+			if chain.StandardChainCandidate == false && chain.SuperchainLevel == Frontier {
+				t.Skip()
+			}
+			if chain.ChainID == 10 {
+				t.Skip("we don't have the allocs for op mainnet")
+			}
+			testGenesisPredeploys(t, chain)
+		})
+	}
+}