## TL:DR
This batched proposal is to Accept/Open an HRMP channel with Shadow (Crust) and to register the CSM token

## Summary
We propose to open a bi-directional channel between Moonriver and Shadow (Crust). Initially, the main use case will be to transfer CSM between the two chains, but it can be further expanded to other use cases. The proposal also includes the CSM asset registration as xcCSM, with the following details:
 - Multilocation: *{ "parents": 1, "interior": {"X1":  { "Parachain": 2012 }}}*
 - Decimals: *12*
 - Name: *Crust Shadow Native Token*
 - Symbol: *xcCSM*

xcCSM will have the following asset ID and XC-20 address:
 - Asset ID: 108457044225666871745333730479173774551
 - XC-20 address: 0xffFfFFFf519811215E05eFA24830Eebe9c43aCD7

## Proposal
Proposal #80with the following hash: *0x2c2e0555d489bb8619c07010ca7335d8d42124a7a68923d65abccbe2c4f1387d*

## Technical details:
The procedure for opening the channels is as follows:

 - Shadow: already proposed to open an HRMP channel to Moonriver
 - Moonriver: democracy batched proposal:
     - Open Moonriver to Shadow HRMP channel
     - Accept Shadow to Moonriver HRMP channel
     - Register CSM asset as an XC-20 
 - Shadow: democracy proposal to accept Moonriver to Shadow HRMP channel

Once the HRMP channels are ready, XCM based cross-chain transfer will be possible. The extrinsics that need to be executed on the relay chain, are:

 - To open the HRMP channel from Moonriver: hrmp.hrmpInitOpenChannel(recipient: 2012, proposedMaxCapacity: 1000, proposedMaxMessageSize: 102400), which its hex-encoded call data is 0x3c00dc070000e803000000900100
 - To accept this HRMP channel: hrmp.hrmpAcceptOpenChannel(sender: 2023) , which hex-encoded call data is 0x3c01e7070000

The *proposedMaxCapacity *and *proposedMaxMessageSize *are set to the values of Kusama’s *configuration.activeConfig.hrmpChannelMaxCapacity* and *configuration.activeConfig.hrmpChannelMaxMessageSize* values, respectively.

These extrinsics need to be called from the parachain’s sovereign account as origin, via a democracy proposal. The proposal will use *polkadotXcm* pallet to send XCM message to the Relay Chain with the following items:

 - Withdraw asset: take funds out of the Sovereign Account of the origin parachain (in the relay chain) to a holding state
 - Buy execution: buys execution time from the relay chain, to execute the XCM message
 - Transact: provides the call data to be executed
 - Deposit asset (optional): refunds the leftover funds after the execution. If this is not provided, no refunds will be carried out

The asset will be registered with the metadata described in the summary. The *setAssetUnitsPerSecond* was calculated using the value for KSM, and the price ratio between KSM and CSM on April 6th, 2022.

If you are interested, the hex-encoded call data for this proposal in [Moonriver](https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Fwss.api.moonriver.moonbeam.network#/extrinsics/decode) is:

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

As a prerequisite, the parachain’s sovereign account must contain at least 10 KSM to be locked as collateral (5 for each channel direction), plus some KSM to pay for XCM execution fees.



Send a batch of dispatch calls and atomically execute them.
The whole transaction will rollback and fail if any of the calls failed.

May be called from any origin.

- `calls`: The calls to be dispatched from the same origin. The number of call must not
  exceed the constant: `batched_calls_limit` (available in constant metadata).

If origin is root then call are dispatch without checking origin filter. (This includes
bypassing `frame_system::Config::BaseCallFilter`).

# <weight>
- Complexity: O(C) where C is the number of calls to be batched.
# </weight>

- The proposal is to open a channel between Moonriver and Shadow (Crust) to transfer a token called CSM.
- The CSM token will be registered as xcCSM with certain details like decimals, name, and symbol.
- The proposal has a technical process involving opening the channel and accepting it through democracy proposals.
- Once the channels are ready, cross-chain transfers will be possible.
- The proposal also includes some technical details about extrinsics and the registration process.

#80 Open/Accept HRMP channel to/from Shadow (Crust) and Register CSM Asset