diff --git a/src/content/history/index.md b/src/content/history/index.md index e2acd67860a..73798d54949 100644 --- a/src/content/history/index.md +++ b/src/content/history/index.md @@ -26,6 +26,21 @@ Looking for future protocol upgrades? [Learn about upcoming upgrades to Ethereum ## 2022 {#2022} +### Paris (The Merge) {#paris} + +Sep-15-2022 06:42:42 AM +UTC
+Block number: 15537394
+ETH price: $1,472 USD
+ ethereum.org on waybackmachine + +#### Summary {paris-summary} + +The Paris upgrade was triggered by the proof-of-work blockchain passing a [terminal total difficulty](/glossary/#terminal-total-difficulty) of 58750000000000000000000. This happened at block 15537393 on 15th September 2022, triggering the Paris upgrade the next block. Paris was [The Merge](/upgrades/merge/) transition - its major feature was switching off the [proof-of-work](/developers/docs/consensus-mechanisms/pow) mining algorithm and associated consensus logic and switching on [proof-of-stake](/developers/docs/consensus-mechanisms/pos) instead. Paris itself was an upgrade to the [execution clients](/developers/docs/nodes-and-clients/#execution-clients) (equivalent to Bellatrix on the consensus layer) that enabled them to take instruction from their connected [consensus clients](/developers/docs/nodes-and-clients/#consensus-clients). This required a new set of internal API methods, collectively known as the [Engine API](https://github.com/ethereum/execution-apis/blob/main/src/engine/specification.md), to be activated. This was arguably the most significant upgrade in Ethereum history since [Homestead](#homestead)! + +- [Read the Paris upgrade specification](https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/paris.md) + +--- + ### Bellatrix {#bellatrix} Sep-06-2022 11:34:47 AM +UTC