diff --git a/cmd/keeper/README.md b/cmd/keeper/README.md
index 4b5c07e04d..3939cc3ad4 100644
--- a/cmd/keeper/README.md
+++ b/cmd/keeper/README.md
@@ -7,6 +7,7 @@ Keeper command is a specialized tool for validating stateless execution of Ether
 The keeper reads an RLP-encoded payload containing:
 - A block to execute
 - A witness with the necessary state data
+- A chainID
 
 It then executes the block statelessly and validates that the computed state root and receipt root match the values in the block header.
 
@@ -19,10 +20,7 @@ cmd/keeper/
 ├── main.go                    # Main execution logic
 ├── getpayload_example.go      # Example implementation with embedded data
 ├── getpayload_ziren.go        # Ziren zkVM implementation
-├── chainconfig_mainnet.go     # Mainnet chain configuration
-├── chainconfig_sepolia.go     # Sepolia chain configuration
-├── chainconfig_hoodi.go       # Hoodi chain configuration
-└── README.md                  # This file
+└── ...
 ```
 
 ## Creating a Custom Platform Implementation
@@ -41,14 +39,6 @@ import (
     // ... other imports as needed
 )
 
-// getChainConfig returns the chain configuration for this platform
-func getChainConfig() *params.ChainConfig {
-    // Return the appropriate chain config for your platform
-    // Examples: params.MainnetChainConfig, params.SepoliaChainConfig, 
-    // or a custom configuration
-    return params.MainnetChainConfig
-}
-
 // getInput returns the RLP-encoded payload
 func getInput() []byte {
     // Your platform-specific code to retrieve the RLP-encoded payload
@@ -70,14 +60,7 @@ func getInput() []byte {
 ### 2. Build for Your Platform
 
 ```bash
-# Build with specific platform and chain configuration
-go build -tags "myplatform mainnet" ./cmd/keeper
-
-# Available chain configurations:
-# - mainnet: Ethereum mainnet
-# - sepolia: Sepolia testnet
-# - hoodi: Hoodi testnet
-# If no chain tag is specified, defaults to mainnet
+go build -tags "myplatform" ./cmd/keeper
 ```
 
 ## Payload Structure
@@ -98,17 +81,12 @@ See `getpayload_example.go` for a complete example with embedded Hoodi block dat
 
 ```bash
 # Build example with different chain configurations
-go build -tags "example hoodi" ./cmd/keeper    # Example with Hoodi config (default for example)
-go build -tags "example mainnet" ./cmd/keeper  # Example with mainnet config
-go build -tags "example sepolia" ./cmd/keeper  # Example with Sepolia config
+go build -tags "example" ./cmd/keeper
 ```
 
 ### Ziren zkVM Implementation
-Build for the Ziren zkVM platform:
+Build for the Ziren zkVM platform, which is a MIPS ISA-based zkvm:
 
 ```bash
-# For MIPS architecture (typical for zkVM)
-GOOS=linux GOARCH=mipsle GOMIPS=softfloat go build -tags "ziren mainnet" ./cmd/keeper
-GOOS=linux GOARCH=mipsle GOMIPS=softfloat go build -tags "ziren sepolia" ./cmd/keeper
-GOOS=linux GOARCH=mipsle GOMIPS=softfloat go build -tags "ziren hoodi" ./cmd/keeper
+GOOS=linux GOARCH=mipsle GOMIPS=softfloat go build -tags "ziren" ./cmd/keeper
 ```
diff --git a/cmd/keeper/chainconfig_mainnet.go b/cmd/keeper/chainconfig.go
similarity index 56%
rename from cmd/keeper/chainconfig_mainnet.go
rename to cmd/keeper/chainconfig.go
index e3e6dc4bdf..c9859d450f 100644
--- a/cmd/keeper/chainconfig_mainnet.go
+++ b/cmd/keeper/chainconfig.go
@@ -14,13 +14,25 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-//go:build !hoodi && !sepolia
-
 package main
 
-import "github.com/ethereum/go-ethereum/params"
+import (
+	"fmt"
 
-// getChainConfig returns the Ethereum mainnet chain configuration.
-func getChainConfig() *params.ChainConfig {
-	return params.MainnetChainConfig
+	"github.com/ethereum/go-ethereum/params"
+)
+
+// getChainConfig returns the appropriate chain configuration based on the chainID.
+// Returns an error for unsupported chain IDs.
+func getChainConfig(chainID uint64) (*params.ChainConfig, error) {
+	switch chainID {
+	case 0, params.MainnetChainConfig.ChainID.Uint64():
+		return params.MainnetChainConfig, nil
+	case params.SepoliaChainConfig.ChainID.Uint64():
+		return params.SepoliaChainConfig, nil
+	case params.HoodiChainConfig.ChainID.Uint64():
+		return params.HoodiChainConfig, nil
+	default:
+		return nil, fmt.Errorf("unsupported chain ID: %d", chainID)
+	}
 }
diff --git a/cmd/keeper/chainconfig_hoodi.go b/cmd/keeper/chainconfig_hoodi.go
deleted file mode 100644
index 8e98a1cb8a..0000000000
--- a/cmd/keeper/chainconfig_hoodi.go
+++ /dev/null
@@ -1,26 +0,0 @@
-// Copyright 2025 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-//go:build hoodi
-
-package main
-
-import "github.com/ethereum/go-ethereum/params"
-
-// getChainConfig returns the Hoodi testnet chain configuration.
-func getChainConfig() *params.ChainConfig {
-	return params.HoodiChainConfig
-}
\ No newline at end of file
diff --git a/cmd/keeper/chainconfig_sepolia.go b/cmd/keeper/chainconfig_sepolia.go
deleted file mode 100644
index ee863e732f..0000000000
--- a/cmd/keeper/chainconfig_sepolia.go
+++ /dev/null
@@ -1,26 +0,0 @@
-// Copyright 2025 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-//go:build sepolia
-
-package main
-
-import "github.com/ethereum/go-ethereum/params"
-
-// getChainConfig returns the Sepolia testnet chain configuration.
-func getChainConfig() *params.ChainConfig {
-	return params.SepoliaChainConfig
-}
\ No newline at end of file
diff --git a/cmd/keeper/getpayload_example.go b/cmd/keeper/getpayload_example.go
index 206652cecc..683cc79248 100644
--- a/cmd/keeper/getpayload_example.go
+++ b/cmd/keeper/getpayload_example.go
@@ -26,6 +26,7 @@ import (
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/core/stateless"
 	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
 )
 
@@ -63,7 +64,6 @@ var witnessRlp []byte
 //go:embed 1192c3_block.rlp
 var blockRlp []byte
 
-
 // getInput is a platform-specific function that will recover the input payload
 // and returns it as a slice. It is expected to be an RLP-encoded Payload structure
 // that contains the witness and the block.
@@ -88,6 +88,7 @@ func getInput() []byte {
 	}
 
 	payload := Payload{
+		ChainID: params.HoodiChainConfig.ChainID.Uint64(),
 		Block:   &block,
 		Witness: witness,
 	}
diff --git a/cmd/keeper/main.go b/cmd/keeper/main.go
index 0aba562e72..cfb06f0da0 100644
--- a/cmd/keeper/main.go
+++ b/cmd/keeper/main.go
@@ -30,6 +30,7 @@ import (
 // Payload represents the input data for stateless execution containing
 // a block and its associated witness data for verification.
 type Payload struct {
+	ChainID uint64
 	Block   *types.Block
 	Witness *stateless.Witness
 }
@@ -39,7 +40,11 @@ func main() {
 	var payload Payload
 	rlp.DecodeBytes(input, &payload)
 
-	chainConfig := getChainConfig()
+	chainConfig, err := getChainConfig(payload.ChainID)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "failed to get chain config: %v\n", err)
+		os.Exit(13)
+	}
 	vmConfig := vm.Config{}
 
 	crossStateRoot, crossReceiptRoot, err := core.ExecuteStateless(chainConfig, vmConfig, payload.Block, payload.Witness)