An IBC-enabled, Cosmos SDK-based blockchain testnet for IRISnet, featuring fast CometBFT finality and the iService framework for secure on/off-chain interoperability using ERIS.
IRIShub Testnet is the public ERIS-denominated network for IRISnet (Cosmos SDK + Tendermint) used to safely validate IBC interoperability, iService (on/off‑chain service) calls, and governance upgrades before mainnet. It’s ideal for testing cross‑chain asset/NFT transfers, relayer flows, and parameter tuning with faucet‑funded ERIS and negligible gas fees. For performance, expect few‑second block intervals with instant (per‑block) finality and moderate throughput suitable for app testing—typically faster finality and lower fees than EVM testnets with 12s blocks and base fees.
It uniquely offers IRISnet’s iService framework, letting dApps invoke verifiable off‑chain services with on‑chain SLAs and payments, and route those calls across chains via IBC—capabilities uncommon on other networks. Built on Tendermint, it provides deterministic finality each block, predictable low fees, and mature IBC modules for seamless cross‑chain testing, making it relayer‑ and bridge‑friendly. Developers also benefit from standard Cosmos SDK tooling (gRPC/REST), a faucet, and governance/parameter testing in an enterprise‑ready environment.
IRIShub Testnet uses ERIS as the gas token for transaction fees. You can obtain ERIS by bridging from other chains or purchasing using thirdweb Bridge, or through faucets (for testnet).
To bridge ERIS to IRIShub Testnet, connect your wallet to thirdweb bridge, select your source chain, choose the token you want to bridge, select IRIShub Testnet as the destination, enter the amount, and confirm the transaction. The bridge will handle the cross-chain transfer instantly.
To build on IRIShub 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 IRIShub 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 ERIS on IRIShub Testnet, ensure your wallet is connected to the IRIShub Testnet network, enter the recipient's address, specify the amount of ERIS to send, review the gas fee, and confirm the transaction in your wallet.