This proposal aims upgrade the Polkadot network to runtime [v9420](https://github.com/paritytech/polkadot/releases/tag/v0.9.42): the specific details on this upgrade please check the release notes. This runtime contains the changes from v9370 to v9420. Please note there are 4 runtime migrations for the Relay Chain in this release (details below). 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: `0x0352127d49a9cb7794251a4caeb9c6b729444f1f40a9ebd2284dfbc168319363`
- Preimage is submitted.

### Relay Chain

Among other things, this proposal includes the inclusion of OpenGov on Polkadot. Note that, in order for OpenGov to be fully operational, [the proposal upgrading collectives parachain](https://polkadot.polkassembly.io/motion/403) needs to be approved and enacted (this is ongoing). If this happens, Fellowship will be created in the Collectives parachain. The Technical Fellowship is an integral part of OpenGov model.

#### Relay Chain Changes

- [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 Parachain Runtimes

This Polkadot system parachain upgrade includes changes since v9370, which has several major updates. For one, it includes XCM v3.

On Statemint, this does not include NFT 2.0 or Foreign Assets as the Statemine release does, although with the audits completed these will be in an upcoming release. It does include the 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.

### External Motion

Please note this proposal is submitted as an external motion: meaning after/if Council approves, this submission will be up for vote in referenda queue for the community to have the final decision. It is a general expectation, given the size of the upgrade, for the community to vote on this for a complete launch period (28 days). 

Make sure to vote at your convenience!

:

- This proposal aims to upgrade the Polkadot Network to Runtime v9420, which includes changes from v9370.
- Note that 4 runtime migrations for the Relay Chain are included in this release.
- OpenGov will be enabled on Polkadot if the proposal for Collectives parachain upgrade is approved.
- This proposal is submitted as an external motion.
- The community will vote on this upgrade for a complete launch period (28 days).

#121 Runtime Upgrade v9420 on Polkadot Network