This proposal aims upgrade Kusama relay chain to runtime [v9420](https://github.com/paritytech/polkadot/releases/tag/v0.9.42) and Kusama System Parachains (Statemint/Collectives) to runtime [v9420](https://github.com/paritytech/cumulus/releases/tag/parachains-v9420): the specific details on this upgrade please check the release notes. This release contains the changes from v0.9.41 to v0.9.42. Please note there are 4 runtime migrations for relay chain on this release (details below), and in addition to the migrations mentioned above, all the migrations included in runtimes since v9380 have been included in this release, allowing to jump over a few runtimes. 

- Call Hash: `0xf3872cfebdcb48512eeaf8914e442398b85ace552d0c172623f2e7341c80638d`

- Preimage is submitted: Submission should have the hash: `0x2142648ddbdc47fe9ff8d402f47004e442851810de188a25733bcfb7f0e0d3fb`

**Relay chain Runtime**

- [S] ✅ audited [#12951](https://github.com/paritytech/substrate/pull/12951) Low - Deprecate Currency; introduce holds and freezing into fungible traits

- [S] ✅ trivial [#13287](https://github.com/paritytech/substrate/pull/13287) Low - Metadata v15: expose api to fetch metadata for version

- [P] ✅ trivial [#6897](https://github.com/paritytech/polkadot/pull/6897) Low - Update weights

- [P] ✅ audited [#6701](https://github.com/paritytech/polkadot/pull/6701) Low - Introduce opengov into polkadot

- [P] ⏳ pending non-critical audit [#5974](https://github.com/paritytech/polkadot/pull/5974) Low - Kusama: enable dispute slashes

- [S] ✅ trivial [#13558](https://github.com/paritytech/substrate/pull/13558) Low - Getcallindex trait

- [P] ✅ trivial [#6928](https://github.com/paritytech/polkadot/pull/6928) Low - Vstam1/xcm admin origin

- [P] ✅ trivial [#6937](https://github.com/paritytech/polkadot/pull/6937) Low - Inherent disputes: remove per block initializer and disputes timeout event

- [S] ✅ audited [#12287](https://github.com/paritytech/substrate/pull/12287) Low - Emit event when changing total locked value in pallet-balances

- [S] ✅ trivial [#13704](https://github.com/paritytech/substrate/pull/13704) Low - Frame: fix the referenda confirming alarm

- [S] ✅ audited [#13715](https://github.com/paritytech/substrate/pull/13715) ‼️ HIGH - Reward pool migration fix

- [S] ✅ trivial [#13648](https://github.com/paritytech/substrate/pull/13648) Low - Contracts: add host function tracing

- [P] ✅ trivial [#6846](https://github.com/paritytech/polkadot/pull/6846) Low - Proxy for nomination pools

- [P] ✅ trivial [#6980](https://github.com/paritytech/polkadot/pull/6980) Low - Tighter bound on asset types teleported so that weight is cheaper

- [S] ✅ trivial [#13702](https://github.com/paritytech/substrate/pull/13702) Low - [contracts] overflowing bounded deletionqueue

- [S] ✅ trivial [#13610](https://github.com/paritytech/substrate/pull/13610) Low - Refactor: inconsistent balanceconversion fn

- [S] ✅ trivial [#13798](https://github.com/paritytech/substrate/pull/13798) Low - Uniform pallet warnings

- [S] ✅ trivial [#13722](https://github.com/paritytech/substrate/pull/13722) Low - Implement #[pallet::composite_enum]

- [S] ✅ trivial [#13699](https://github.com/paritytech/substrate/pull/13699) Low - Deprecate v1 weights

- [S] ✅ trivial [#13835](https://github.com/paritytech/substrate/pull/13835) Low - removepallet migration utility struct

- [S] ✅ trivial [#13302](https://github.com/paritytech/substrate/pull/13302) Low - Metadata v15: add runtime api metadata

- [S] ✅ trivial [#13851](https://github.com/paritytech/substrate/pull/13851) Low - Fix fungible and fungibles set_balance return value

- [S] ✅ trivial [#13724](https://github.com/paritytech/substrate/pull/13724) Low - Contracts: add sr25519_verify

- [P] ⏳ pending non-critical audit [#6934](https://github.com/paritytech/polkadot/pull/6934) Low - Enable changing executor params through governance

- [P] ✅ audited [#6843](https://github.com/paritytech/polkadot/pull/6843) Low - Xcm: properly set the pricing for the dmp router

- [S] [#13779](https://github.com/paritytech/substrate/pull/13779) Low - Add freeze/thaw events and tests

- [P] [#6662](https://github.com/paritytech/polkadot/pull/6662) Low - Xcm: remote account converter

- [S] ✅ trivial [#13827](https://github.com/paritytech/substrate/pull/13827) Low - Pallet-democracy: do not request the proposal when scheduling

- [S] ✅ audited [#13936](https://github.com/paritytech/substrate/pull/13936) ❗️ Medium - Removes reportsbykindindex

- [P] [#7114](https://github.com/paritytech/polkadot/pull/7114) ❗️ Medium - Offences migration v1: removes reportsbykindindex

- [S] ✅ trivial [#13988](https://github.com/paritytech/substrate/pull/13988) ❗️ Medium - Pallet collective: fix genesis member sort order

- [P] ⏳ pending non-critical audit [#7098](https://github.com/paritytech/polkadot/pull/7098) Low - Xcm: implement a blocking barrier

- [S] ⏳ pending non-critical audit [#13932](https://github.com/paritytech/substrate/pull/13932) Low - Frame: inherited call weight syntax

- [P] ✅ trivial [#7150](https://github.com/paritytech/polkadot/pull/7150) Low - Update weights

**System parachains Runtime**

This Kusama system parachains upgrade includes changes since v9382. Most notably, this includes the new NFT 2.0 pallet (`pallet-nft`) on Statemine. This includes a number of new functionalities like smart attributes. More features can be found in the primary [tracking issue](https://github.com/paritytech/substrate/issues/11783). As the audit has been completed, this will be coming soon to Statemint.

This release also includes a [new instance of the Assets pallet](https://github.com/paritytech/cumulus/pull/2133), called `ForeignAssets`. Foreign Assets uses a `MultiLocation` as an asset class identifier and allows other parachains (and eventually bridges) to represent their native assets directly on Statemine. For example, the asset ID of the native asset of Parachain 9000 would be `{ parents: 1, interior: X1(Parachain(9000)) }`. The original instance of the Assets pallet remains, and is often referred to as the “Trust Backed” Assets pallet, denoting the fact that they are administered by an account that one trusts to have some off-chain, corresponding asset.

Finally, there is a new runtime API to [query account balances](https://github.com/paritytech/cumulus/pull/2455), which will return all the fungible assets (under the Balances pallet and both instances of the Assets pallet) that an account owns in a single RPC call. This should be particularly useful for front end developers.

**Please note this proposal is submitted on Whitelisted Caller track: meaning parallel to this public proposal, the whitelist of the proposal hash for this submission is also up for vote by the Fellowship (link [here](https://kusama.subsquare.io/fellowship/referendum/38)).**

If the proposal is approved, enactment will happen in block #18,062,739. 

Make sure to vote at your convenience!

: This ReferendumV2 post is asking to upgrade Kusama relay chain to runtime v9420 and Kusama System Parachains (Statemint/Collectives) to runtime v9420. This release upgrades the relay chain and contains 4 runtime migrations, as well as many other changes from v9380. It enables new features for the NFT 2.0 pallet on Statemint, a new instance of the Assets pallet (“ForeignAssets”), and a new runtime API to query account balances. The proposal is submitted Whitelisted Caller track with enactment happening at block #18,062,739. 

- Proposal aims to upgrade Kusama relay chain and System Parachains to runtime version v9420
- 4 runtime migrations for relay chain
- Enables new features for the NFT 2.0 pallet on Statemint, a new instance of the Assets pallet (“ForeignAssets”), and a new runtime API to query account balances
- Submitted on whitelisted caller track with enactment happening at block #18,062,739

#190 Runtime Upgrade v9420 on Kusama and v9420 on System Parachains