Aureus

Cardano

ADA-USD

$0.2425−$0.0046(−1.85%)downtoday

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  • A record, not a feed.
  • Every fact names its source.
  • Practise with play money, and keep a journal of why.
Market value
$9.1B
Traded in 24 hours
$231.0M
Coins in circulation
37.5B ADA
Coins in total
45.0B ADA
Highest price ever
$3.0900 1 September 2021
Rank
#18
Price · last 30 days

In its own words

“Cardano is a proof-of-stake blockchain platform: the first to be founded on peer-reviewed research and developed through evidence-based methods.”

Checked 27 Sep 2026 at cardano.org (opens in a new tab)

Published, not verified.

Genesis, Cardano

First block
book.world.dev.cardano.org (opens in a new tab)

The Byron genesis hash: the fingerprint of the file every node started from.

Made
23 September 2017, 21:44 UTCbook.world.dev.cardano.org (opens in a new tab)

The file's startTime. Block 1, read from a public node, carries the same time.

Signed by
IOHK, now Input Output, founded by Charles Hoskinsoniog.io (opens in a new tab)

roadmap.cardano.org: “jointly developed by IOHK and partners”. iog.io: “Founded in 2015 by Charles Hoskinson, Input Output Group is a world-leading blockchain infrastructure and research engineering firm”.

Cardano began with the first
block
of its own chain.
A genesis block. ADA is the native coin of the Cardano chain, and the project's own words are: “the first version of Cardano shipped in September 2017, and the Byron era began.” The chain's published starting file gives 23 September 2017.

roadmap.cardano.org (opens in a new tab)

Whitepaper
docs.cardano.org/introduction
docs.cardano.org (opens in a new tab)
Official site
cardano.org
cardano.org (opens in a new tab)
Show the technical record
First block

Block 1: the first block made after the starting file.

Cexplorer (opens in a new tab)
Paid to
The people who bought ada vouchers, 2015 to 2017

The project's own words: “Distribution of ada token vouchers … took place in Asia in four stages between October 2015 and the start of January 2017.” No single address.

cardano.org (opens in a new tab)

Checked 22 Sep 2026. A record of beginnings, not advice.

Tidings

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