The Jur Chain is a Substrate based chain. The Jur Chain integrates the cumulus crate in order to connect securely to the Relay Chain that provides block finalization and security hence making the Jur Chain a parachain, specifically of the Polkadot Relay Chain.
Jur will be bidding for a parachain slot in the upcoming Q1 ‘23; until then it will be running as a solochain. Here is a high level overview of the Jur Chain infrastructure:
In terms of runtime here is a bird’s eye view of the integrated functions: