This will be a batch of two scheduled transactions. They would probably work fine at once, but will schedule to be safe and ensure that the `set_storage` takes place prior to authorizing the upgrade.

The first will set some storage keys in Shell for Statemint's "genesis". The second will authorize the upgrade to Statemint. Both calls need to be constructed on Shell and then dispatched from the Relay Chain in an XCM.

See the [release notes](https://github.com/paritytech/cumulus/releases/tag/statemint-v6.0.1) to review the assets, reproduce the `set_storage` call, and generate the runtime.

## Shell Constructions

### Set Storage

The `set_storage` call can be generated with the `build-spec` command from a collator node, using `statemint_genesis.json` as input. See the release notes for more info. Notable storage items include:

- Setting the first set of Aura collators.
- Setting the `SafeXcmVersion` to `2` to protect against older XCM formats.

Call data (statemint_genesis_values.scale):

```
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
```

### Authorize Upgrade

This message authorizes the upgrade of Shell to a runtime with a given hash (statemint_runtime-v601.compact.compressed.wasm). Once the upgrade is authorized, anyone can submit the runtime via `parachain_system.enact_authorized_upgrade`, and it will upgrade 600 blocks (approximately 1 hour) later.

Call data: `0x0103af49687b93d91fc08c1fcea1001d724a95c533a949019645d3e4179beedbf67e`

![](https://i.imgur.com/rHrTJRx.png)

## Polkadot Proposal

This proposal is to schedule these messages to dispatch from Polkadot to Shell. They will dispatch 5 and 20 blocks after enactment to ensure each is processed separately. We give them plenty of weight (100 billion and 1 billion, respectively) to ensure they execute.

Call hash: `0xa6830793b6a3473f66fbd7305a9e330dd2dd688df0e8fcbd0c9ff08d28040a34`

![](https://i.imgur.com/5D8syF9.png)
![](https://i.imgur.com/YmVC8o3.png)


Schedule a majority-carries referendum to be tabled next once it is legal to schedule
an external referendum.

The dispatch of this call must be `ExternalMajorityOrigin`.

- `proposal_hash`: The preimage hash of the proposal.

Unlike `external_propose`, blacklisting has no effect on this and it may replace a
pre-scheduled `external_propose` call.

Weight: `O(1)`

: 
- Generate `set_storage` call using `build-spec` command with input of `statemint_genesis.json` noted in the release notes. 
- Set storage items include setting the Aura collators and setting the `SafeXcmVersion` to `2` to protect against older XCM formats.
- Generate `authorize_upgrade` call using the runtime hash `statemint_runtime-v601.compact.compressed.wasm` 
- Schedule transactions to dispatch from Polkadot to Shell, 5 and 20 blocks after enactment, respective weight of 100 billion and 1 billion.

#131 Upgrade Shell to Statemint