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Upgrade · Sep 12, 2021

Alonzo smart contracts

Cardano adds Plutus smart contracts.

ADA close on Sep 12, 2021
$2.58
Source: Coinbase Exchange ADA/USD daily close, 2021-09-12

The Alonzo hard fork on September 12, 2021 enabled smart contracts. ADA had reached its highest prices in early September 2021 in anticipation.

Cardano price, USD
launchrallycrashupgradelegalforkoutagemilestone

Source: Binance ADA/USDT daily closes 2018-04-17 to 2021-03-17; Coinbase Exchange ADA/USD daily closes 2021-03-18 to 2026-10-14. Fetched Oct 14, 2026 from free public APIs. Click a dot for the event and its price on that day.

Part of Cardano in 2021 · full Cardano timeline · Cardano hub

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Chang hard fork

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Sources

Facts written in our own words. Last checked Oct 14, 2026.