An EVM-compatible blockchain testnet on Carbon (Carbon EVM Testnet), enabling Solidity dApps with IBC interoperability and low-fee, fast-finality execution using SWTH for gas.
Carbon EVM Testnet is the Ethereum-compatible test network for the Carbon blockchain (Cosmos SDK/CometBFT) that uses SWTH for gas and targets near‑instant finality. It’s used to deploy and audit Solidity dApps with MetaMask/Hardhat/Foundry, integrate with Carbon’s native DeFi (on‑chain orderbook, AMM, perps, money markets), and simulate IBC-based cross‑chain transfers before mainnet. As of Sep 2025, typical testnet metrics show ~1–2s block times, sub‑cent gas for simple transactions (<$0.001 in SWTH), and sustained hundreds+ TPS with steady developer activity; check the explorer for live stats.
Carbon EVM Testnet is unique in pairing EVM smart contracts with Carbon’s IBC‑native asset routing and exchange‑grade DeFi primitives (orderbook and perps), giving Solidity dApps direct access to Cosmos liquidity in addition to standard ERC tooling. Compared with other EVM testnets, it provides low fees in SWTH, fast finality (~1s blocks), and high throughput (hundreds+ TPS) while exposing deep on‑chain trading and margin modules not found on generic L1/L2 testnets. This combination enables high‑frequency, cross‑chain DeFi testing with predictable costs and performance before deploying to Carbon mainnet.
Carbon EVM Testnet uses SWTH as the gas token for transaction fees. You can obtain SWTH by bridging from other chains or purchasing using thirdweb Bridge, or through faucets (for testnet).
To bridge SWTH to Carbon EVM Testnet, connect your wallet to thirdweb bridge, select your source chain, choose the token you want to bridge, select Carbon EVM Testnet as the destination, enter the amount, and confirm the transaction. The bridge will handle the cross-chain transfer instantly.
To build on Carbon EVM Testnet you can use thirdweb, which provides an easy way to build, monetize and scale your apps, games or agents. You can find detailed guides and documentation on https://portal.thirdweb.com to get started quickly.
To add Carbon EVM Testnet to your wallet, you can connect your wallet and click on [Add to Wallet] button at the top of the page. Alternatively, you can add the network manually using the RPC URL and chain details and add it to your wallet's network settings.
To send SWTH on Carbon EVM Testnet, ensure your wallet is connected to the Carbon EVM Testnet network, enter the recipient's address, specify the amount of SWTH to send, review the gas fee, and confirm the transaction in your wallet.