Providing Easier Access to Testnet ETH Across the Superchain with the Superchain Faucet

Developers need access to testnet tokens so that they can properly deploy, test, and iterate on their contracts in testnet. With this launch of the Superchain Faucet developers will now be able to access testnet ETH for any OP Chain including Base Sepolia, Lyra Sepolia, Mode Sepolia, OP Goerli, OP Sepolia, PGN Sepolia, and Zora Sepolia.

Managing multiple faucets with Gelato Functions

For each OP Chain, there is a separate faucet smart contract that needs to be funded with that chain’s testnet ETH. It quickly becomes a significant amount of maintenance to individually fund each of these contracts. However, with Gelato Functions the funding of each individual faucet is automated, using only one smart contract. With this configuration we only need to make sure one contract is funded with testnet ETH, and then that contract handles bridging the testnet ETH to each individual OP Chain test network supported by the Superchain Faucet. This allows the Superchain Faucet to scale to support many test networks, without increasing the amount of maintenance required to keep each faucet funded.

Expanding onchain identity methods to include World ID and attestations

In addition to expanding the number of test networks supported, the Superchain Faucet now supports attestations and World ID. Alongside developers that hold an Optimist NFT, developers with a World ID or valid attestation using the Ethereum Attestation Service can receive larger drips of testnet ETH.

Attestations are digital signatures on a piece of structured information used to build more trust online and onchain. They’re made by anyone and can be made about anything. Users with Gitcoin Passport scores > 25 and Superchain Faucet attestations are eligible for larger drips.

World ID, from Worldcoin, is a digital identity protocol that lets you prove you are a unique and real person while remaining anonymous. World ID offers several proofs of personhood, but biometric in-person verification (via a device called the Orb) is the only supported method.

Block explorers to support developing on the Superchain

If you're building on multiple OP Chains, Once Upon's Superchain block explorer consolidates transaction data across all OP Chains, offering developers a unified view of all Superchain activity, including testnets.

Developers now have multiple block explorers to choose from when testing and building on the Superchain.

Start contributing to the Superchain

With this launch, we’re alleviating a common difficulty that limits the productivity of builders contributing across the Superchain.

You can start using the faucet to get testnet tokens for any OP Chain by visiting app.optimism.io/faucet.

If you're new to onchain development check out Optimism Unleashed by CryptoZombies and Superchain Builder NFT by ThirdWeb. If you're already familiar with onchain development, check out the Optimism Ecosystem Contributions Dashboard for project ideas that the Optimism Collective is looking for. Happy building!