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GembaBlockchain Testnet

Add GembaBlockchain Testnet to Your Wallet — MetaMask, OKX, Rabby, Trust Wallet

Testnet
Chain ID: 821207·Symbol: GMB

GembaBlockchain Testnet is an EVM-compatible blockchain with Chain ID 821207 and native token GMB. This page lets you add GembaBlockchain Testnet to MetaMask, Rabby Wallet, OKX Wallet or Trust Wallet in one click — no manual Chain ID or RPC entry required.

RPC Endpoints
https://testnet.gembascan.io/rpc
https://rpc1.gembascan.io
https://rpc2.gembascan.io

Block Explorer

GembaScan

GembaBlockchain Testnet network configuration

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

NameGembaBlockchain Testnet
Chain ID821207
Native tokenGMB
Decimals18
RPC Endpointhttps://testnet.gembascan.io/rpc
Block Explorerhttps://testnet.gembascan.io

What is GembaBlockchain Testnet?

GembaBlockchain Testnet 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 GembaBlockchain Testnet once you add the network configuration.

Why do you need to add GembaBlockchain Testnet to your wallet?

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

  2. 2

    Confirm in your wallet

    Your wallet shows the GembaBlockchain Testnet network details: Chain ID 821207, native token GMB. 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 GembaBlockchain Testnet. You can start transacting right away — you will need GMB to pay gas fees.

Important notice

  • •Always verify Chain ID 821207 before confirming — attackers sometimes create fake networks with similar names but different Chain IDs
  • •You need GMB tokens in your wallet to pay gas fees for transactions on GembaBlockchain Testnet
  • •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 GembaBlockchain Testnet 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 GembaBlockchain Testnet Chain ID?▾
The Chain ID of GembaBlockchain Testnet is 821207. This unique number identifies the network and prevents MetaMask and other EVM wallets from mixing up transactions across different chains.
Do I need GMB tokens to use GembaBlockchain Testnet?▾
Yes. Every transaction on GembaBlockchain Testnet requires GMB to pay gas fees. You can purchase GMB on exchanges and bridge it to GembaBlockchain Testnet, or use a faucet if this is a testnet.
What is the GembaBlockchain Testnet RPC endpoint?▾
An RPC endpoint is the server address your wallet uses to communicate with the GembaBlockchain Testnet blockchain — sending transactions, reading balances, and checking state. One popular GembaBlockchain Testnet RPC is https://testnet.gembascan.io/rpc. This page shows live latency for each RPC so you can pick the fastest one.
My wallet says GembaBlockchain Testnet already exists when I click Add — what do I do?▾
That's completely normal. If GembaBlockchain Testnet is already in your wallet, it will simply switch to that network instead of adding a duplicate — no error or conflict.
I added GembaBlockchain Testnet 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.