Title: Ethereum dev confirms Goerli merger date, the final update before the Merge
Jul 29, 2022 03:00AM ET
Ethereum's mainnet is just one testnet merger away from officially transitioning to a proof-of-stake (PoS) blockchain.
After several shadow forums and testnet mergers, the multi-year journey has reached its final stage with the announcement of the latest testnet merger into the Beacon chain.
The Beacon chain was launched in December 2020, marking the beginning of Phase 0 of the three-phase process. Phase 1, the current phase, is expected to be completed by 2021.
However, due to numerous delays and work in progress on the developer side, it is expected to be completed by the third week of September.
The final phase of the transition is expected to be completed by the end of 2023.
Ethereum lead developer Tim Beiko took to Twitter to announce the details of the transition to the Goerli testnet.
The Goerli testnet will merge with a beacon chain called Prater, and the combined Goerli/Prater network will retain the Goerli name after the merger.
The merger of the testnets will be completed in two phases, starting with the August 4 Bellatrix upgrade at the consensus layer.
The Bellatrix upgrade will be triggered by epoch height 112260.
The Ethereum PoS network advances in epochs instead of blocks, with an epoch being a bundle of up to 32 blocks.
The second phase of the upgrade will be called Paris, where the execution layer will transition from proof-of-work (PoW) to proof-of-stake.
This phase is expected to be completed between August 6 and August 12. The Paris upgrade will be triggered by a specific Terminal Total Difficulty (TTD) value of 10790000.
Once the execution layer exceeds the TTD threshold, the next block will be created exclusively by the PoS validator.