Airdrop101
CMP-Mainnet

Add CMP-Mainnet to Your Wallet — MetaMask, OKX, Rabby, Trust Wallet

Chain ID: 256256·Symbol: CMP

CMP-Mainnet is an EVM-compatible blockchain with Chain ID 256256 and native token CMP. This page lets you add CMP-Mainnet to MetaMask, Rabby Wallet, OKX Wallet or Trust Wallet in one click — no manual Chain ID or RPC entry required.

RPC Endpoints
https://mainnet.block.caduceus.foundation
WSS
wss://mainnet.block.caduceus.foundation

Block Explorer

Mainnet Scan

What is CMP-Mainnet?

CMP-Mainnet is an EVM (Ethereum Virtual Machine) compatible blockchain network. Any EVM wallet — MetaMask, Rabby, OKX Wallet, Trust Wallet, Coinbase Wallet — can connect and transact on CMP-Mainnet once you add the network configuration.

Why do you need to add CMP-Mainnet to your wallet?

MetaMask and most wallets only come pre-configured with Ethereum Mainnet. To transact, swap tokens, or use dApps on CMP-Mainnet, you need to add the network first. Entering an incorrect Chain ID or RPC can put your assets at risk. Use the "Add to wallet" button above — data sourced directly from chainid.network, the canonical Ethereum chain registry.

How to add CMP-Mainnet to your wallet

  1. 1

    Click Add to wallet

    Press the "Add to wallet" button above. MetaMask, OKX Wallet, Rabby Wallet or Trust Wallet will show a popup asking you to confirm adding the CMP-Mainnet network.

  2. 2

    Confirm in your wallet

    Your wallet shows the CMP-Mainnet network details: Chain ID 256256, native token CMP. Verify the Chain ID is correct, then click "Approve" or "Add Network".

  3. 3

    Switch to the new network

    After confirming, your wallet automatically switches to CMP-Mainnet. You can start transacting right away — you will need CMP to pay gas fees.

CMP-Mainnet network technical details

To add manually, go to Settings → Networks → Add Network in MetaMask (or your wallet's equivalent) and enter the details below:

NameCMP-Mainnet
Chain ID256256
Native tokenCMP
Decimals18
RPC Endpointhttps://mainnet.block.caduceus.foundation
Block Explorerhttps://mainnet.scan.caduceus.foundation

Important notice

  • •Always verify Chain ID 256256 before confirming — attackers sometimes create fake networks with similar names but different Chain IDs
  • •You need CMP tokens in your wallet to pay gas fees for transactions on CMP-Mainnet
  • •Data on this page is sourced from chainid.network — the community-verified Ethereum chain registry
  • •If the "Add to wallet" button doesn't work, your wallet may not support wallet_addEthereumChain — add the network manually using the details below

Frequently asked questions

Is it safe to add CMP-Mainnet to MetaMask?▾
Yes, if you use the "Add to wallet" button on this page. Data is sourced from chainid.network — the community-audited Ethereum registry. Adding a network does not expose your private key or grant any permissions to the dApp.
What is CMP-Mainnet Chain ID?▾
The Chain ID of CMP-Mainnet is 256256. This unique number identifies the network and prevents MetaMask and other EVM wallets from mixing up transactions across different chains.
Do I need CMP tokens to use CMP-Mainnet?▾
Yes. Every transaction on CMP-Mainnet requires CMP to pay gas fees. You can purchase CMP on exchanges and bridge it to CMP-Mainnet, or use a faucet if this is a testnet.
What is the CMP-Mainnet RPC endpoint?▾
An RPC endpoint is the server address your wallet uses to communicate with the CMP-Mainnet blockchain — sending transactions, reading balances, and checking state. One popular CMP-Mainnet RPC is https://mainnet.block.caduceus.foundation. This page shows live latency for each RPC so you can pick the fastest one.
My wallet says CMP-Mainnet already exists when I click Add — what do I do?▾
That's completely normal. If CMP-Mainnet is already in your wallet, it will simply switch to that network instead of adding a duplicate — no error or conflict.
I added CMP-Mainnet but the network won't load — what's wrong?▾
The most common cause is a broken or overloaded RPC endpoint. Your wallet uses RPC to connect to the blockchain — if the RPC is down, the network won't load even if it was added correctly. Fix: copy a different RPC from the list above (prefer green low-latency ones), then go to Settings → Networks in your wallet and replace the old RPC with the new one. Watch the tutorial video above for step-by-step instructions on updating your RPC.