Ethereum Foundation Announces Deprecation of Ropsten, Rinkeby and Kiln

On June 21, the Ethereum Foundation announced the deprecation of test networks such as Ropsten, Rinkeby and Kiln. The announcement states that users and developers have time to complete the migration before a complete shutdown.

The main contents of the announcement are:

• The Kiln Merge testnet, launched earlier this year, will shut down shortly after the Ethereum mainnet transitions to proof-of-stake.

• Ropsten, Ethereum’s longest-lived proof-of-work testnet, has transitioned to proof-of-stake. It will close in the fourth quarter of 2022.

• Rinkeby is a geth-based proof-of-authority testnet that will not transition to proof-of-stake and will close in Q2/Q3 2023.

• Users and developers are encouraged to migrate to Goerli or Sepolia as soon as possible to test Ethereum in the combined environment. After the merger, Rinkeby will no longer be a suitable test environment for the Ethereum mainnet. Unplanned mainnet upgrades may no longer work on deprecated testnets.

• The Grey Glacier upgrade is planned to produce a block, and the planned upgrade will be carried out at block height 15,050,000, expected on June 29, 2022.

Ethereum has a number of testnets for users and developers to test before interacting with the mainnet. These are actually copies of the Ethereum mainnet, on which ether and other tokens have no value. They allow application, tooling, infrastructure and protocol developers to deploy changes to their products (or the protocol itself) in a low-risk environment before moving to mainnet. That said, because testnets are fully functional blockchains, their history and state grows over time. This ultimately makes them harder to run and maintain nodes on. For this reason, some testnets are shut down periodically.

As Merge approached, client developers decided to deprecate more testnets in order to focus on properly maintaining two of them in the long term: Goerli and Sepolia. The Kiln, Rinkeby and Ropsten testnets are now deprecated. While the three testnets are now considered deprecated, users and developers still have time to plan their migrations before a complete shutdown. Kiln, Ropsten and Rinkeby will be closed according to the schedule below.

Kiln: After the mainnet merge

Launched in 2022 to provide a combined testing environment, the Kiln testnet is expected to close shortly after the Ethereum mainnet transitions to proof-of-stake in the second half of 2022. Developers should not use Kiln as a persistent testing environment. This is expected to be the first testnet to be shut down after The Merge on the Ethereum mainnet.

Ropsten: Q4 2022

The Ropsten testnet, which ran through The Merge on June 8, 2022, will shut down in Q4 2022. Developers currently using Ropsten as a staging/testing environment should migrate to Goerli or Sepolia.

Rinkeby: Q2/Q3 2023

The Rinkeby testnet will not run through The Merge. It is being replaced by Sepolia and will close about a year after Sepolia transitions to proof-of-stake, around the second/third quarter of 2023.

Once the Ethereum mainnet transitions to proof-of-stake, Rinkeby will no longer be an accurate staging environment for the mainnet. Here is a list of changes introduced by The Merge that application developers should be aware of. Again, please note that these changes will not be deployed to Rinkeby. Developers currently using Rinkeby as a staging/testing environment should prioritize migrating to Goerli or Sepolia, and projects affected by Ethereum’s transition to proof-of-stake should migrate as soon as possible.

Goerli & Sepolia

The two testnets that client developers will maintain after the merger are Goerli and Sepolia. The Goerli network will be merged with the Prater Beacon Chain testnet. A new beacon chain was created to convert Sepolia to Proof of Stake. Goerli’s beacon chain will remain open to users who wish to run testnet validators. Sepolia will run with a permissioned set of validators, similar to how some testnets work today.

Therefore, stakers who want to test protocol upgrades before deploying to mainnet should use Goerli. Goerli also has a strong community and a lot of existing infrastructure to support it. Its state is closest to the mainnet and can be used to test smart contract interactions. On the other hand, Sepolia is fairly new, which means its state and history are pretty minimal. This means that the network can be synchronized quickly and nodes need less storage space to run on it. This is useful for users who want to spin up nodes quickly and interact directly with the network.

Summary: In short, Kiln, Ropsten, and Rinkeby are now deprecated. Two testnets, Goerli and Sepolia, will continue to be maintained. Goerli is recommended for testing protocol upgrades and developers who want to interact with large existing state. Sepolia is recommended for users and developers who wish to use a more lightweight chain for synchronization and interaction.

Posted by:CoinYuppie,Reprinted with attribution to:
Coinyuppie is an open information publishing platform, all information provided is not related to the views and positions of coinyuppie, and does not constitute any investment and financial advice. Users are expected to carefully screen and prevent risks.

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