Ouroboros (protocol)

Ouroboros is a family of proof-of-stake consensus protocols used in the Cardano and Polkadot blockchains.

[1] Ouroboros was published as "the first provable secure PoS consensus protocol".

It was postulated by an academic team led by Aggelos Kiayias at the Annual International Cryptology Conference in 2017.

[2] Later that year, Ouroboros (Classic) was implemented by IOHK as the basis of the Cardano blockchain platform and various upgrades.

[4] Nguyen et al. compared Ouroboros to other PoS protocols.

The ouroboros, Kekulé 's inspiration for the structure of benzene. It is used to symbolize the ever-growing consensus on the Cardano blockchain