Sidechains
With respect to sidechains, Cardano will support a new protocol developed by Kiayias, Miller and Zindros (KMZ sidechains) based upon prior results from proofs of proofs of work. The particular design is beyond the scope of this paper; however, the concept allows for the secure and non-interactive movement of funds from CSL to any Cardano Computation Layer or other blockchain supporting the protocol.
KMZ sidechains are the key to encapsulating complexity. Ledgers with regulatory requirements, private operations, robust scripting languages and other special concerns are effectively black boxes to CSL, yet the CSL user will gain certain guarantees about accounting and the ability to recall funds once computation is complete.