During the 2021 Summit Aggelos briefly mentions a future of Cardano which includes sidechains which will, among other things, enable integration with other blockchains.

Does anyone have in depth resources (eg: whitepapers, IOHK blog posts, etc) which elaborate on this idea so that I can learn more?

1 Answer 1


I would take a look at Hydra.

  • Hydra is a state channel (like lightning), not a sidechain, right? Oct 14, 2021 at 16:36
  • 1
    According to Charles, the Catalyst Voting System is running on a sidechain.
    – Aoaddeola
    Oct 14, 2021 at 17:48
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    AFAIU, Hydra is the mechanism that will enable cross-chain communication. Sidechains would be a single usecase for Hydra. Oct 18, 2021 at 18:25

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