Airdrop101
Formicarium

Add Formicarium to Your Wallet — MetaMask, OKX, Rabby, Trust Wallet

Chain ID: 43521·Symbol: M

Formicarium is an EVM-compatible blockchain with Chain ID 43521 and native token M. This page lets you add Formicarium to MetaMask, Rabby Wallet, OKX Wallet or Trust Wallet in one click — no manual Chain ID or RPC entry required.

RPC Endpoints
https://rpc.formicarium.memecore.net
WSS
wss://ws.formicarium.memecore.net

Block Explorer

OKX-FormicariumMemeCoreScan-Formicarium

What is Formicarium?

Formicarium 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 Formicarium once you add the network configuration.

Why do you need to add Formicarium to your wallet?

MetaMask and most wallets only come pre-configured with Ethereum Mainnet. To transact, swap tokens, or use dApps on Formicarium, 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 Formicarium 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 Formicarium network.

  2. 2

    Confirm in your wallet

    Your wallet shows the Formicarium network details: Chain ID 43521, native token M. 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 Formicarium. You can start transacting right away — you will need M to pay gas fees.

Formicarium network technical details

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

NameFormicarium
Chain ID43521
Native tokenM
Decimals18
RPC Endpointhttps://rpc.formicarium.memecore.net
Block Explorerhttps://www.okx.com/web3/explorer/formicarium-testnet

Important notice

  • •Always verify Chain ID 43521 before confirming — attackers sometimes create fake networks with similar names but different Chain IDs
  • •You need M tokens in your wallet to pay gas fees for transactions on Formicarium
  • •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 Formicarium 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 Formicarium Chain ID?▾
The Chain ID of Formicarium is 43521. This unique number identifies the network and prevents MetaMask and other EVM wallets from mixing up transactions across different chains.
Do I need M tokens to use Formicarium?▾
Yes. Every transaction on Formicarium requires M to pay gas fees. You can purchase M on exchanges and bridge it to Formicarium, or use a faucet if this is a testnet.
What is the Formicarium RPC endpoint?▾
An RPC endpoint is the server address your wallet uses to communicate with the Formicarium blockchain — sending transactions, reading balances, and checking state. One popular Formicarium RPC is https://rpc.formicarium.memecore.net. This page shows live latency for each RPC so you can pick the fastest one.
My wallet says Formicarium already exists when I click Add — what do I do?▾
That's completely normal. If Formicarium is already in your wallet, it will simply switch to that network instead of adding a duplicate — no error or conflict.
I added Formicarium 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.