Cardano (blockchain platform)

Last updated

Cardano
Cardano Logo.jpg
Denominations
SymbolADA, ₳
Code cardano-node
Subunits
 1⁄1000000Lovelace
Development
Original author(s) Charles Hoskinson & Jeremy Wood
White paper Cardano whitepaper
Initial release27 September 2017(7 years ago) (2017-09-27) [1]
Latest release 9.1.0 / 24 July 2024(3 months ago) (2024-07-24) [2]
Code repository https://cardanoupdates.com/
Development statusActive
Written in Haskell
Operating system Cross-platform
Developer(s) Cardano Foundation, IOHK, EMURGO
Source model Free and open-source software
License Apache
Ledger
Timestamping scheme Proof of stake
Block time20 seconds
Block explorer Adatools.io

Pooltool.io

Cardanoscan.io
Circulating supply36.365 billion ₳ (as of Nov. 2023)
Supply limit45 billion ₳ [3]
Valuation
Exchange rate Floating
Demographics
Official user(s)~3264 stake pools globally (as of Nov. 2023) [4]
Website
Website cardano.org

Cardano is a public blockchain platform. It is open-source and decentralized, with consensus achieved using proof of stake. It can facilitate peer-to-peer transactions with its internal cryptocurrency, ADA. [5]

Contents

Cardano's development began in 2015, led by Ethereum co-founder Charles Hoskinson. The project is overseen and supervised by the Cardano Foundation based in Zug, Switzerland. [6] [7] When launched in 2017, it was the largest cryptocurrency to use a proof-of-stake blockchain, which is seen as a greener alternative to proof-of-work protocols. [8]

Cardano co-founder Charles Hoskinson. (2022, Web Summit) 2022 - Crypto PO1 7525 (52475009129).jpg
Cardano co-founder Charles Hoskinson. (2022, Web Summit)

History

After leaving Ethereum in 2014 Charles Hoskinson and Jeremy Wood set out their plans for Cardano in 2015. [9] [10] [11] Hoskinson had left Ethereum after a dispute with another co-founder, Vitalik Buterin. Hoskinson wanted to accept venture capital and create a company, while Buterin wanted to keep it as a nonprofit organization. Woods and Hoskinson co-founded the business IOHK to develop blockchains for use by corporations, governments, and education institutions. [11]

Cardano was initially released to the public in 2017. [3] That year, IOHK partnered with the University of Edinburgh to launch the Blockchain Technology Laboratory. [12] [13] The lab had six post-doctoral and professorial positions with up to 35 jobs created in total, and was led by Aggelos Kiayias, developer of the Ouroboros protocol. [14]

Cardano reached a market cap of $77 billion in May 2021, which was the fourth highest for a cryptocurrency at that time. [15] [16]

Advertising agency MBLM ranked Cardano 26th for brand intimacy out of 600 brands in August 2022, in between Ford and Nestlé and the highest rank for a cryptocurrency. Citing an MBLM partner, advertising industry magazine Ad Age said Cardano's high ranking "can likely be chalked up to the gambling element of crypto". [17]

Design

Mind map of Cardano technical overview, 2019 Cardano-cryptocurrency-platform-mind-map.png
Mind map of Cardano technical overview, 2019

Governance

Cardano is controlled by three entities:

As of 2021, Frederik Gregaard is known to be the CEO of the Cardano Foundation. [18]

The platform is named after Italian mathematician Gerolamo Cardano, while the cryptocurrency itself is named after the English mathematician Ada Lovelace. The Ada sub-unit is the Lovelace; one Ada = 1,000,000 Lovelaces. [19] Cardano is focused on scientific research with universities. [3] [20]

Technical design

Atypically, Cardano does not have a white paper. Instead, it uses design principles intended to overcome issues – such as scalability, interoperability, and a lack of regulatory compliance – faced by earlier cryptocurrencies. [21] Cardano claims that it overcomes problems found in other cryptocurrencies, mainly that Bitcoin is too slow and inflexible and that Ethereum is not safe or scalable. [22] Like Bitcoin, Cardano uses a UTXO ledger model, though it is an extended version (EUTXO) [23] [24] to facilitate smart contracts and scripting languages. [25]

Cardano uses a proof-of-stake (PoS) protocol named Ouroboros; [26] this was in contrast to Bitcoin and Ethereum, which used proof-of-work protocols (though the latter switched over in 2022). [27] Proof-of-stake blockchains use far less energy than proof-of-work chains. [27] This is achieved by eliminating the computing resources that a proof-of-work algorithm requires. In February 2021, Hoskinson estimated the Cardano network used 6 GWh annually, less than 0.01% of the 110.53 TWh used by the Bitcoin network as calculated by the University of Cambridge. [28] [29] [3]

Figure 1: Epoch schedule for the Cardano blockchain. In Ouroboros, time is divided into slots of roughly 20 seconds, with epochs (aggregations of slots) lasting approximately 5 days. Epochs Cardano.png
Figure 1: Epoch schedule for the Cardano blockchain. In Ouroboros, time is divided into slots of roughly 20 seconds, with epochs (aggregations of slots) lasting approximately 5 days.

Within the Cardano platform, Ada exists on the settlement layer. This layer keeps track of transactions. The second layer is the computation layer and is designed to be similar to Ethereum, enabling smart contracts and applications to run on the platform. [22] Like other cryptocurrencies, Ada (ADA) can be stored on a digital wallet. Cardano's native digital wallet is named "Daedalus". [3] The Daedalus wallet downloads a full copy of the entire transaction history of the Cardano blockchain. Wallet users face the risk of losing access to funds if the wallet's seed phrase is lost or stolen.

Development phases of Cardano, or "eras", are named after notable figures in poetry and computer science: Byron, Shelley, Goguen, Basho, and Voltaire. The first three stages implemented a basic blockchain, and then implemented decentralisation and smart contracts. The Basho era focuses on scaling the blockchain. [33] Voltaire, the final era, adds voting and treasury management functionality to the blockchain. [34]

Once Voltaire is complete IOHK has said it plans to release the development of the network entirely to the community. The "Cardano improvement proposal" CIP-1694 is the first step towards "on-chain" governance. It intends to allow ADA token holders to create proposals that may be voted upon by the community and, if successful, implemented. [35]

As with other proof-of-stake cryptocurrencies, Cardano offers "staking", which allows token holders to set-aside (delegate) tokens to potentially "validate" transactions on the same blockchain (Figure 1). The quantity of tokens staked corresponds with the likelihood of being chosen to validate a transaction, and thus be rewarded by the algorithm with more of the same token. [36] [37] Cardano's Daedalus wallet allows for staking. For Cardano, users participate in "staking pools" with other token-holders.

Applications

People in Consensus conference, 2022 Consensus 2022, Cardano.jpg
People in Consensus conference, 2022

Applications of the Cardano blockchain include:

Decentralized finance

Cardano implemented decentralized finance (DeFi) services on September 12, 2021, including an upgrade to enable smart contracts and the ability to build decentralized applications (DApps). [48] Also included is Plutus, a smart contract language written in Haskell, and Marlowe, a domain-specific language designed by Simon Thompson for non-programmers in the financial sector. [25] [49] [ better source needed ]

Partner chains

In November 2023 Cardano began introducing sidechains, referred to by the project as "partner chains". Sidechains are intended to perform off-chain computations, known as smart contracts, while using the Cardano network for settlement. The first example of such a chain, named "Midnight", will make use of the Polkadot framework in combination with Cardano. [50] [ better source needed ]

Non-fungible tokens (NFTs)

Cardano also enables creating non-fungible tokens (NFTs). Snoop Dogg released several thousand NFTs in a project named "Baked Nation" for the Cardano chain in April 2022. [51] In 2023 a digital artist from the UK sold 7,200 individual works of humanoid deer for almost £500,000 on Cardano. [52] [53]

In 2023, the Securities and Exchange Commission (SEC), a US regulator, issued a complaint against the cryptocurrency exchange Kraken for offering unregistered securities (in violation of the Securities Act) and promising returns on investment for staking in multiple proof-of-stake cryptocurrencies, including Cardano. [37] Without any admission of wrongdoing, Kraken agreed to pay a fine of $30 million and halt its staking program in response. [54] [37]

In June 2023, the SEC sued Binance. Among the allegations was that Cardano was a security and so the cryptocurrency exchange was trading illegally in the US. [55] IOG responded that the filing was inaccurate and that Ada was not a security. [56] Robinhood Markets said it would remove Cardano and two other proof of stake coins from its platform. [57] The Ada price fell from $0.38 to $0.26 in a day on the FT Wilshire index. Both the Wall Street Journal and The Times linked a fall in the price of Cardano – 19 per cent in June – and a slide for other major coins to the SEC's actions. [58] [59]

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