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update history page to include Paris upgrade #7922

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merged 5 commits into from
Sep 26, 2022
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update history page to include Paris upgrade #7922

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1becd05
add paris to upgrade history
jmcook1186 Sep 19, 2022
76e5ea7
update webarchive link
jmcook1186 Sep 19, 2022
b42bab7
Update index.md
jmcook1186 Sep 20, 2022
8db7d37
Update src/content/history/index.md
wackerow Sep 23, 2022
ea87ae7
etherscan link and block clarifier
wackerow Sep 26, 2022
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15 changes: 15 additions & 0 deletions src/content/history/index.md
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Expand Up @@ -26,6 +26,21 @@ Looking for future protocol upgrades? [Learn about upcoming upgrades to Ethereum

## 2022 {#2022}

### Paris (The Merge) {#paris}

<Emoji text=":calendar:" size={1} mr={"0.5rem"} mb={"0.5rem"} /><code>Sep-15-2022 06:42:42 AM +UTC</code><br />
<Emoji text=":bricks:" size={1} mr={"0.5rem"} mb={"0.5rem"} />Block number: <a href="https://etherscan.io/block/15537394">15537394</a><br />
<Emoji text=":money_bag:" size={1} mr={"0.5rem"} mb={"0.5rem"} />ETH price: $1,472 USD<br />
<Emoji text=":desktop_computer:" size={1} mr={"0.5rem"} mb={"0.5rem"} /> <a href="https://web.archive.org/web/20220915075314/https://ethereum.org/">ethereum.org on waybackmachine</a>

#### 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}

<Emoji text=":calendar:" size={1} mr={"0.5rem"} mb={"0.5rem"} /><code>Sep-06-2022 11:34:47 AM +UTC</code><br />
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