Please note this motion replaces [motion 256](https://polkadot.polkassembly.io/motion/256) due to an error on the proposal weight and [motion 257](https://polkadot.polkassembly.io/motion/257) due to an error downgrading the call from the relay chain to native: the proposal fixes both mistakes.

Five more parachains have requested an HRMP channel with Statemint. This motion accepts them all and opens return channels.

**Handy Info**

- **Treasury Address**: `13UVJyLnbVp9RBZYFwFGyDvVd1y27Tt8tkntv6Q7JVPhFsTB`
- **Treasury AccountId:** `0x6d6f646c70792f74727372790000000000000000000000000000000000000000`
- **Statemint Address:** `13YMK2edbuhwMBxeUWm9c643A2wyYHwSVh1bCM7tShtg7Dtk`
- **Statemint AccountId:** `0x70617261e8030000000000000000000000000000000000000000000000000000`

- **Parachains that aim to open channels**: 2021, 2031, 2032, 2035, 2046.

**Call Construction**

These are constructed backwards. That is, the call to use as the proposal is at the end.

**Relay Chain Call to Execute**

First, we need the call that Statemint will execute on the Relay Chain. This accepts all channel requests and returns channel requests to the initiators.

- Encoded Call Data (Polkadot): 

```
0x1a02283c01e50700003c01ef0700003c01f00700003c01f30700003c01fe0700003c00e5070000e8030000009001003c00ef070000e8030000009001003c00f0070000e8030000009001003c00f3070000e8030000009001003c00fe070000e803000000900100
```

**Message from Statemint**

The above message needs to come from Statemint. So we put it into an XCM (the “Transact” instruction) along with purchasing some execution capacity and returning any leftover fees to the Treasury.

- Encoded Call Data (Statemint): 

```
0x1f0001010002140004000000000700c817a80413000000000700c817a80400060002286bee9d011a02283c01e50700003c01ef0700003c01f00700003c01f30700003c01fe0700003c00e5070000e8030000009001003c00ef070000e8030000009001003c00f0070000e8030000009001003c00f3070000e8030000009001003c00fe070000e803000000900100140d01010000000004000101006d6f646c70792f74727372790000000000000000000000000000000000000000
```

**Proposal on the Relay Chain**

But, governance is on the Relay Chain, not Statemint. So take some DOT from the Treasury (100 DOT for 10 channels at 10 DOT each plus 2 DOT for fees) and send a message to Statemint telling it to send a message back. This is the proposal to vote on.

- Encoded Call Data (Polkadot): 

``` 
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
```

- Call Hash: `0xfa5da8a4d9ef08dd22dfbc189861cbb9275dc8c52e4ce9b04f21cc830b3d5617`

Preimage has already been submitted for verification by the community as well. After/if Council votes and passes this proposal, this will need to be voted by the community in referenda queue. 

Schedule the currently externally-proposed majority-carries referendum to be tabled
immediately. If there is no externally-proposed referendum currently, or if there is one
but it is not a majority-carries referendum then it fails.

The dispatch of this call must be `FastTrackOrigin`.

- `proposal_hash`: The hash of the current external proposal.
- `voting_period`: The period that is allowed for voting on this proposal.
	Must be always greater than zero.
	For `FastTrackOrigin` must be equal or greater than `FastTrackVotingPeriod`.
- `delay`: The number of block after voting has ended in approval and this should be
  enacted. This doesn't have a minimum amount.

Emits `Started`.

Weight: `O(1)`

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>

- Five more parachains want to open channels with Statemint.
- The proposal accepts all the channel requests and opens return channels.
- The call data for the relay chain and Statemint are provided.
- The proposal needs to be voted on by the Council and the community.
- The Treasury will provide funds for the channels.

#55 Second Batch Of Statemint HRMP Channels (replacing motions 256 and 257)