diff --git a/packages/protocol/contracts/L1/TaikoL1.sol b/packages/protocol/contracts/L1/TaikoL1.sol
index 52948f129a..3fedb0fbaf 100644
--- a/packages/protocol/contracts/L1/TaikoL1.sol
+++ b/packages/protocol/contracts/L1/TaikoL1.sol
@@ -37,11 +37,6 @@ contract TaikoL1 is EssentialContract, ITaikoL1, TaikoEvents {
         emit StateVariablesUpdated(state.slotB);
     }
 
-    modifier onlyPermittedProposer() {
-        LibProposing.checkProposerPermission(this);
-        _;
-    }
-
     /// @notice Initializes the contract.
     /// @param _owner The owner of this contract. msg.sender will be used if this value is zero.
     /// @param _rollupAddressManager The address of the {AddressManager} contract.
@@ -76,7 +71,7 @@ contract TaikoL1 is EssentialContract, ITaikoL1, TaikoEvents {
     )
         external
         payable
-        onlyPermittedProposer
+        onlyFromOptionalNamed(LibStrings.B_BLOCK_PROPOSER)
         whenNotPaused
         nonReentrant
         emitEventForClient
@@ -97,7 +92,7 @@ contract TaikoL1 is EssentialContract, ITaikoL1, TaikoEvents {
         bytes calldata _txList
     )
         external
-        onlyPermittedProposer
+        onlyFromOptionalNamed(LibStrings.B_BLOCK_PROPOSER)
         whenNotPaused
         nonReentrant
         emitEventForClient
@@ -112,7 +107,7 @@ contract TaikoL1 is EssentialContract, ITaikoL1, TaikoEvents {
         bytes[] calldata _txListArr
     )
         external
-        onlyPermittedProposer
+        onlyFromOptionalNamed(LibStrings.B_BLOCK_PROPOSER)
         whenNotPaused
         nonReentrant
         emitEventForClient
diff --git a/packages/protocol/contracts/L1/access/IProposerAccess.sol b/packages/protocol/contracts/L1/access/IProposerAccess.sol
deleted file mode 100644
index dc23e5f8b3..0000000000
--- a/packages/protocol/contracts/L1/access/IProposerAccess.sol
+++ /dev/null
@@ -1,13 +0,0 @@
-// SPDX-License-Identifier: MIT
-pragma solidity 0.8.24;
-
-/// @title IProposerAccess
-/// @dev An interface to check if a proposer is eligible to propose blocks in a specific Ethereum
-/// block.
-/// @custom:security-contact security@taiko.xyz
-interface IProposerAccess {
-    /// @notice Checks if a proposer can propose block in the current Ethereum block.
-    /// @param _proposer The proposer.
-    /// @return true if the proposer can propose blocks, false otherwise.
-    function isProposerEligible(address _proposer) external view returns (bool);
-}
diff --git a/packages/protocol/contracts/L1/libs/LibProposing.sol b/packages/protocol/contracts/L1/libs/LibProposing.sol
index 71ef4a3feb..b9b7802077 100644
--- a/packages/protocol/contracts/L1/libs/LibProposing.sol
+++ b/packages/protocol/contracts/L1/libs/LibProposing.sol
@@ -3,7 +3,6 @@ pragma solidity 0.8.24;
 
 import "../../libs/LibAddress.sol";
 import "../../libs/LibNetwork.sol";
-import "../access/IProposerAccess.sol";
 import "./LibBonds.sol";
 import "./LibData.sol";
 import "./LibUtils.sol";
@@ -260,15 +259,6 @@ library LibProposing {
         }
     }
 
-    function checkProposerPermission(IAddressResolver _resolver) internal view {
-        address proposerAccess = _resolver.resolve(LibStrings.B_PROPOSER_ACCESS, true);
-        if (proposerAccess == address(0)) return;
-
-        if (!IProposerAccess(proposerAccess).isProposerEligible(msg.sender)) {
-            revert L1_INVALID_PROPOSER();
-        }
-    }
-
     function _encodeBaseFeeConfig(
         TaikoData.BaseFeeConfig memory _baseFeeConfig
     )
diff --git a/packages/protocol/contracts/common/AddressResolver.sol b/packages/protocol/contracts/common/AddressResolver.sol
index eaad49760a..1f2d96eb93 100644
--- a/packages/protocol/contracts/common/AddressResolver.sol
+++ b/packages/protocol/contracts/common/AddressResolver.sol
@@ -26,6 +26,15 @@ abstract contract AddressResolver is IAddressResolver, Initializable {
         _;
     }
 
+    /// @dev Modifier that ensures the caller is the resolved address of a given
+    /// name, if the name is set.
+    /// @param _name The name to check against.
+    modifier onlyFromOptionalNamed(bytes32 _name) {
+        address addr = resolve(_name, true);
+        if (addr != address(0) && msg.sender != addr) revert RESOLVER_DENIED();
+        _;
+    }
+
     /// @dev Modifier that ensures the caller is a resolved address to either _name1 or _name2
     /// name.
     /// @param _name1 The first name to check against.
diff --git a/packages/protocol/contracts/common/LibStrings.sol b/packages/protocol/contracts/common/LibStrings.sol
index 43a4ad6697..c6cd9576a6 100644
--- a/packages/protocol/contracts/common/LibStrings.sol
+++ b/packages/protocol/contracts/common/LibStrings.sol
@@ -5,6 +5,7 @@ pragma solidity 0.8.24;
 /// @custom:security-contact security@taiko.xyz
 library LibStrings {
     bytes32 internal constant B_AUTOMATA_DCAP_ATTESTATION = bytes32("automata_dcap_attestation");
+    bytes32 internal constant B_BLOCK_PROPOSER = bytes32("block_proposer");
     bytes32 internal constant B_BRIDGE = bytes32("bridge");
     bytes32 internal constant B_BRIDGE_WATCHDOG = bytes32("bridge_watchdog");
     bytes32 internal constant B_BRIDGED_ERC1155 = bytes32("bridged_erc1155");
@@ -14,7 +15,6 @@ library LibStrings {
     bytes32 internal constant B_ERC1155_VAULT = bytes32("erc1155_vault");
     bytes32 internal constant B_ERC20_VAULT = bytes32("erc20_vault");
     bytes32 internal constant B_ERC721_VAULT = bytes32("erc721_vault");
-    bytes32 internal constant B_PROPOSER_ACCESS = bytes32("proposer_access");
     bytes32 internal constant B_PROVER_ASSIGNMENT = bytes32("PROVER_ASSIGNMENT");
     bytes32 internal constant B_PROVER_SET = bytes32("prover_set");
     bytes32 internal constant B_QUOTA_MANAGER = bytes32("quota_manager");
diff --git a/packages/protocol/contracts/mainnet/LibRollupAddressCache.sol b/packages/protocol/contracts/mainnet/LibRollupAddressCache.sol
index e15b21692c..98e4a27b9d 100644
--- a/packages/protocol/contracts/mainnet/LibRollupAddressCache.sol
+++ b/packages/protocol/contracts/mainnet/LibRollupAddressCache.sol
@@ -43,7 +43,7 @@ library LibRollupAddressCache {
             if (_name == LibStrings.B_AUTOMATA_DCAP_ATTESTATION) {
                 return (true, 0x8d7C954960a36a7596d7eA4945dDf891967ca8A3);
             }
-            if (_name == LibStrings.B_PROPOSER_ACCESS) {
+            if (_name == LibStrings.B_BLOCK_PROPOSER) {
                 return (true, address(0));
             }
             if (_name == LibStrings.B_CHAIN_WATCHDOG) {