3.8.2 Relay Chain Pattern
This method of integration is aimed at forming a network of networks in which new ecosystems benefit from the interaction of other ecosystems and their services. The most famous solution in this direction is Polkadot, which unites separate networks called parachains through Relay Chain.
In DGT, the role of relay chain is performed by a ring of arbitrators. Segments can have their own access settings and are essentially subnets, including those running on other software (e.g., Corda, etc.).
Pros of this connection method:
Low barrier to DGT network connectivity for private blockchain networks or new web 3/DeFi market entrants
The proposed architecture does not limit the number of segments (i.e. connected networks), does not contain high-cost mechanisms for selecting participants as in the case of Polkadot and is more decentralized than alternative approaches.
Specialized networks are supported, which in this case get the advantage of creating their own ecosystems, as well as the benefits of confidential computing.
Limitations of the method:
Although the method still requires BFT resiliency at the subnet level, it contains weaker security requirements that are partially compatible at the DAG registry level through support for native DAG branches.
Large segments create an uneven load on the arbitrators, which can affect the scaling of the solution. This aspect is addressed by the PoS mechanism for network arbitrators.
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