<p>This call registers and onboards the Polkadot Coretime Chain based on the <a href="https://github.com/polkadot-fellows/runtimes/releases/tag/v1.3.0" target="_blank" rel="noopener">v1.3.0 </a>release. Instructions to reproduce the chain-spec and genesis data are included in the release. A chain-spec is included there for node operators, and will also be added to the polkadot-sdk repository with the other system chain-specs.</p>
<p>This does not initiate the migration to Agile Coretime, but is a prerequisite before the migration can be run. A follow-up referendum will update the Polkadot Relay Chain and migrate existing leases to the Coretime Chain, then a third referendum will configure the Coretime Chain and start the sales.</p>

See [`Pallet::dispatch_whitelisted_call_with_preimage`].

- **Problem Statement:** Registering and onboarding the Polkadot Coretime Chain based on the v1.3.0 release.
- **Significance:** Preparing for the migration to Agile Coretime, which requires this step as a prerequisite.
- **Proposed Solution:** Follow the provided instructions to reproduce the chain-spec and genesis data for the Polkadot Coretime Chain.
- **Expected Outcomes:** Successful registration and onboarding of the Polkadot Coretime Chain, paving the way for future migrations and configurations.

#1107 [Whitelisted Caller] Register the Polkadot Coretime Chain

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