These teams are on Goerli. Don't be the last one.
Migrate to Ethereum's primary Proof of Stake testnet.
supported on Alchemy
Testnets are one of the primary application developer-facing functions impacted by The Merge.
Anything to do now that The Merge has happened?
We highly recommend transitioning all testnet activity to Goerli. On October 5th, Alchemy removed support for Kovan, Ropsten and Rinkeby. Switch to Goerli and use our Goerli Faucet to get more Goerli ETH.
What is The Merge?
Ethereum Mainnet was historically secured by proof of work. On September 15th, Proof of Work Ethereum "merged" with the beacon chain Proof of Stake system, marking the end of Proof of Work for Ethereum, and the full transition to Proof of Stake.
When did The Merge occur?
What are the benefits of Goerli?
Goerli is the most stable testnet, which will provide the best testing environment for mainnet contracts.
Goerli has a strong community using and maintaining the network, as well as a diverse validator client set.
By migrating to only Goerli, all testnet liquidity will be on the same testnet. This allows more composability to develop on testnets across protocols that might otherwise be hard to test together.
Why is Alchemy no longer going to support Kovan, Ropsten and Rinkeby after October 5, 2022?
Kovan and Ropsten are already deprecated by the Ethereum Foundation, and Rinkeby is soon to follow. There is a high chance Kovan and Ropsten will fail without warning, as they are no longer actively maintained. We never want developers on Alchemy to be caught by surprise, so we’ve proactively set a concrete date for deprecation to allow for a smooth transition to Goerli, which will remain an actively supported testnet.
What is driving these timelines?
We don't want you to be surprised by failing testnets. Kovan, Ropsten & Rinkeby all have short term risk of major network issues, so migrating as soon as possible to Goerli will minimize your exposure to possible network forks and stoppages.
Why switch off Kovan?
Kovan has been officially deprecated by the EF for well over a year. It is not receiving any network upgrades. Only two validators remain on the network and they may turndown very soon, at which point the network will halt. If you are migrating from Kovan to Goerli on Optimism, use this guide. Given that Kovan has been deprecated by the Ethereum community, in order to continue to provide our ecosystem with a stable test network that remains in sync with Ethereum post-merge, Optimism is following suit.
Why switch off Ropsten?
Ropsten Testnet was the first major network to undergo the Proof of Work to Proof of Stake upgrade on June 8th. After merging to Proof of Stake, Ropsten is no longer supported by the Ethereum community, and there are risks of major network issues moving forward. Follow these guidelines to switch from Ropsten to Goerli.
Why switch off Rinkeby?
Rinkeby, a geth-based proof-of-authority testnet, will not transition to proof-of-stake and will be shut down in Q2/Q3 2023. Rinkeby is no longer a suitable testing environment for the Ethereum mainnet. Unplanned mainnet upgrades may no longer be applied to deprecated testnets. If you’re building on Arbitrum, follow these guidelines to switch from Rinkeby to Goerli.
Where do I get Goerli ETH?
I rely on non-standard APIs on other testnets. Are these supported on Goerli?
All methods currently supported on Ropsten are also supported on Goerli.
Will Alchemy be supporting Sepolia in addition to Goerli?
Alchemy currently has no plans to support the Sepolia testnet. There are inherent advantages to Goerli, e.g., an open validator set for testing network upgrades and a large existing state. There are also liquidity advantages to running on one testnet, instead of splitting traffic across both. Read more about Goerli and Sepolia.
Does Alchemy support Proof of Work Ethereum post-Merge?
No, we no longer support Proof of Work Ethereum.