diff --git a/arbos/arbosState/arbosstate.go b/arbos/arbosState/arbosstate.go
index f7b7f0e7f6..7a6941f0ac 100644
--- a/arbos/arbosState/arbosstate.go
+++ b/arbos/arbosState/arbosstate.go
@@ -163,7 +163,7 @@ var (
 )
 
 // Returns a list of precompiles that only appear in Arbitrum chains (i.e. ArbOS precompiles) at the genesis block
-func getArbitrumOnlyGenesisPrecompiles(chainConfig *params.ChainConfig) []common.Address {
+func GetArbitrumOnlyGenesisPrecompiles(chainConfig *params.ChainConfig) []common.Address {
 	rules := chainConfig.Rules(big.NewInt(0), false, 0, chainConfig.ArbitrumChainParams.InitialArbOSVersion)
 	arbPrecompiles := vm.ActivePrecompiles(rules)
 	rules.IsArbitrum = false
@@ -204,7 +204,7 @@ func InitializeArbosState(stateDB vm.StateDB, burner burn.Burner, chainConfig *p
 
 	// Solidity requires call targets have code, but precompiles don't.
 	// To work around this, we give precompiles fake code.
-	for _, genesisPrecompile := range getArbitrumOnlyGenesisPrecompiles(chainConfig) {
+	for _, genesisPrecompile := range GetArbitrumOnlyGenesisPrecompiles(chainConfig) {
 		stateDB.SetCode(genesisPrecompile, []byte{byte(vm.INVALID)})
 	}
 
diff --git a/system_tests/outbox_test.go b/system_tests/outbox_test.go
index d0ca0ccda3..e80c837b58 100644
--- a/system_tests/outbox_test.go
+++ b/system_tests/outbox_test.go
@@ -16,6 +16,8 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/params"
+	"github.com/offchainlabs/nitro/arbos/arbosState"
 	"github.com/offchainlabs/nitro/gethhook"
 	"github.com/offchainlabs/nitro/solgen/go/node_interfacegen"
 	"github.com/offchainlabs/nitro/solgen/go/precompilesgen"
@@ -23,6 +25,37 @@ import (
 	"github.com/offchainlabs/nitro/util/merkletree"
 )
 
+func TestP256VerifyEnabled(t *testing.T) {
+	gethhook.RequireHookedGeth()
+	for _, tc := range []struct {
+		arbOSVersion   uint64
+		wantP256Verify bool
+	}{
+		{
+			arbOSVersion:   20,
+			wantP256Verify: false,
+		},
+		{
+			arbOSVersion:   30,
+			wantP256Verify: true,
+		},
+	} {
+		addresses := arbosState.GetArbitrumOnlyGenesisPrecompiles(&params.ChainConfig{
+			ArbitrumChainParams: params.ArbitrumChainParams{
+				EnableArbOS:         true,
+				InitialArbOSVersion: tc.arbOSVersion,
+			},
+		})
+		got := false
+		for _, a := range addresses {
+			got = got || (a == common.BytesToAddress([]byte{0x01, 0x00}))
+		}
+		if got != tc.wantP256Verify {
+			t.Errorf("Got P256Verify enabled: %t, want: %t", got, tc.wantP256Verify)
+		}
+	}
+}
+
 func TestOutboxProofs(t *testing.T) {
 	t.Parallel()
 	gethhook.RequireHookedGeth()