Chainlink (blockchain oracle)

Chainlink
Denominations
Plural	Chainlink
Code	LINK
Development
Original author(s)	Sergey Nazarov, Steve Ellis, Dr. Ari Juels
White paper	chain.link/whitepaper
Code repository	github.com/smartcontractkit/chainlink
Written in	Solidity, GoLang
Operating system	Blockchain-agnostic
Source model	Open source
Website
Website	chain.link

Chainlink is a decentralized blockchain oracle network.^[2]

History

On the 4th of September 2017, the first Chainlink white paper,^[3] ChainLink A Decentralized Oracle Network ^[1] written by Ellis, technical advisor Dr. Ari Juels (a Cornell professor of computer science who coined the term proof of work) and Nazarov^[4] was published, describing the project's solution to the blockchain oracle problem.

During 2020 Everipedia used a Chainlink node to securely post Associated Press data of results of the 2020 Presidential Election.^[5]

In April 2021, Chainlink released a 2.0 version of its white paper that outlined new and forthcoming capabilities to the Chainlink network, including off-chain computation, crypto-economic staking, and privacy-preserving features.^[6]

References

^ ^a ^b Ellis, Steven; Juels, Ari; Nazarov, Sergey (4 September 2017). "ChainLink A Decentralized Oracle Network" (paper). chain.link/. Retrieved 5 July 2021 – via Microsoft Bing.{{cite web}}: CS1 maint: date and year (link)
^ .Breidenbach, Lorenz; Chacin, Christian; Chan, Benedict; Coventry, Alex; Ellis, Steven; Juels, Ari; Koushanfar, Farinaz; Miller, Andrew; Magauran, Brendan; Moroz, Daniel; Nazarov, Sergey; Topliceanu, Alexandru; Tramèr, Florian; Zhang, Fan (15 April 2021) [2017]. "Chainlink 2.0. The Next Steps in the Evolution of Decentralized Oracle Networks 9 Economics and Cryptoeconomics Staking" (paper). research.chain.link/whitepaper-v2.pdf. University of Bern, Cornell Tech, University of California, University of Illinois Urbana-Champaign, Duke University. research.chain.link. pp. 2, 78. Retrieved 4 July 2021 – via Microsoft Bing - https://chain.link. {{cite web}}: External link in |via= (help)CS1 maint: date and year (link) CS1 maint: url-status (link)
^ Caldarelli, Giulio (November 2020). "Understanding the Blockchain Oracle Problem: A Call for Action". Information. 11 (11). (University of Verona, 37129 Verona, Italy): 509. doi:10.3390/info11110509.{{cite journal}}: CS1 maint: location (link) CS1 maint: unflagged free DOI (link)
^ Jakobsson, Markus; Juels, Ari (1999), Preneel, Bart (ed.), "Proofs of Work and Bread Pudding Protocols (Extended Abstract)", Secure Information Networks: Communications and Multimedia Security IFIP TC6/TC11 Joint Working Conference on Communications and Multimedia Security (CMS’99) September 20–21, 1999, Leuven, Belgium, IFIP — The International Federation for Information Processing, Boston, MA: Springer US, pp. 258–272, doi:10.1007/978-0-387-35568-9_18, ISBN 978-0-387-35568-9, retrieved 2021-07-05
^ del Castillo, Michael. "How To Track Official Election Results On Ethereum And EOS". www.forbes.com (Forbes). Retrieved 2021-04-19.
^ Anadiotis, George. "Chainlink 2.0 brings off-chain compute to blockchain oracles, promotes adoption of hybrid smart contracts". www.zdnet.com (ZDNet) ‎. Retrieved 19 April 2021.

[papyrus-1] Ellis, Steven; Juels, Ari; Nazarov, Sergey (4 September 2017). "ChainLink A Decentralized Oracle Network" (paper). chain.link/. Retrieved 5 July 2021 – via Microsoft Bing.{{cite web}}: CS1 maint: date and year (link)

[2] .Breidenbach, Lorenz; Chacin, Christian; Chan, Benedict; Coventry, Alex; Ellis, Steven; Juels, Ari; Koushanfar, Farinaz; Miller, Andrew; Magauran, Brendan; Moroz, Daniel; Nazarov, Sergey; Topliceanu, Alexandru; Tramèr, Florian; Zhang, Fan (15 April 2021) [2017]. "Chainlink 2.0. The Next Steps in the Evolution of Decentralized Oracle Networks 9 Economics and Cryptoeconomics Staking" (paper). research.chain.link/whitepaper-v2.pdf. University of Bern, Cornell Tech, University of California, University of Illinois Urbana-Champaign, Duke University. research.chain.link. pp. 2, 78. Retrieved 4 July 2021 – via Microsoft Bing - https://chain.link. {{cite web}}: External link in |via= (help)CS1 maint: date and year (link) CS1 maint: url-status (link)

[Caldarelli-3] Caldarelli, Giulio (November 2020). "Understanding the Blockchain Oracle Problem: A Call for Action". Information. 11 (11). (University of Verona, 37129 Verona, Italy): 509. doi:10.3390/info11110509.{{cite journal}}: CS1 maint: location (link) CS1 maint: unflagged free DOI (link)

[Jakobsson-4] Jakobsson, Markus; Juels, Ari (1999), Preneel, Bart (ed.), "Proofs of Work and Bread Pudding Protocols (Extended Abstract)", Secure Information Networks: Communications and Multimedia Security IFIP TC6/TC11 Joint Working Conference on Communications and Multimedia Security (CMS’99) September 20–21, 1999, Leuven, Belgium, IFIP — The International Federation for Information Processing, Boston, MA: Springer US, pp. 258–272, doi:10.1007/978-0-387-35568-9_18, ISBN 978-0-387-35568-9, retrieved 2021-07-05

[5] Castillo, Michael. "How To Track Official Election Results On Ethereum And EOS". www.forbes.com (Forbes). Retrieved 2021-04-19.

[6] Anadiotis, George. "Chainlink 2.0 brings off-chain compute to blockchain oracles, promotes adoption of hybrid smart contracts". www.zdnet.com (ZDNet) ‎. Retrieved 19 April 2021.

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