This release contains the changes from polkadot-stable2409-2 to polkadot-stable2412-rc2.

⚠️ Warning: Pre-release Version

The currently published version is a pre-release and is not yet a final stable version. This release is provided for testing purposes only, and there is no guarantee that everything will work as expected. Errors and unusual behaviours of some features are to be expected.

Please use this version at your own risk and report any issues you encounter. We recommend waiting for the official release if you need a stable version.

Changelog

Changelog for `Node Dev`

ℹ️ These changes are relevant to: Those who build around the client side code. Alternative client builders, SMOLDOT, those who consume RPCs. These are people who are oblivious to the runtime changes. They only care about the meta-protocol, not the protocol itself.

[#5880]: Fix prospective parachains test to use shuffled candidate list

Fix prospective parachains test to use shuffled candidate list.
Resolves #5617.

[#5847]: `candidate-validation`: RFC103 implementation

Introduces support for new v2 descriptor core_index and session_index fields.
The subsystem will check the values of the new fields only during backing validations.

[#6015]: Rename QueueEvent::StartWork

When we send QueueEvent::StartWork, we have already completed the execution. Therefore, QueueEvent::FinishWork is a better match.

[#6268]: Bump a timeout in zombienet coretime smoke test

polkadot/zombienet_tests/smoke/0004-coretime-smoke-test.zndsl still timeouts on CI from time to time. Bumping the timeout a bit more.

Related to #6226

[#5919]: substrate-offchain: upgrade hyper to v1

Bump depencency hyper of substrait-offchain for http from 0.14 to 1.
This changed APIs a bit;

sc_offchain::Offchainworker::new() now returns std::io::Result<Self> (Previously was Self)

[#5924]: Bump PoV request timeout

With asynchronous backing and PoV size 10MB, we can increase the PoV request timeout from 1.2s to 2s.

[#5774]: Avoid unnecessary state reset of allowed_requests when no block requests are sent

Previously, the state of allowed_requests was always reset to the default
even if there were no new block requests. This could cause an edge case
because peer_block_request() will return early next time when there are no ongoing block requests.
This patch fixes it by checking whether block requests are empty before updating the state.

[#5762]: Fast return for invalid request of node health

Return directly when invalid request for node health api

[#5908]: collation-generation: use v2 receipts

Implementation of RFC 103 for the collation-generation subsystem.
Also removes the usage of AsyncBackingParams.

[#6011]: collator protocol: validate descriptor version on the validator side

Implement checks needed for RFC 103 polkadot-fellows/RFCs#103 in the validator
side of the collator protocol.

[#5469]: Syncing strategy refactoring

Mostly internal changes to syncing strategies that is a step towards making them configurable/extensible in the
future. It is unlikely that external developers will need to change their code.

[#5038]: Plumb RPC listener up to caller

This PR allows the RPC server's socket address to be returned when initializing the server. This allows the library consumer to easily programmatically determine which port the RPC server is listening on.

[#4837]: Add PVF execution priority

The new logic optimizes the distribution of execution jobs for disputes, approvals, and backings.
The main goal is to create back pressure for backing in the presence of disputes or numerous approval jobs.

[#5666]: Make syncing strategy an argument of the syncing engine

Syncing strategy is no longer implicitly created when building network, but needs to be instantiated explicitly.
Previously default implementation can be created with new function build_polkadot_syncing_strategy or custom
syncing strategy could be implemented and used instead if desired, providing greater flexibility for chain
developers.

[#5789]: Prevents EthereumBlobExporter from consuming parameters when returning NotApplicable

When the EthereumBlobExporter returned a NotApplicable error, it consumed parameters universal_source,
destination and message. As a result, subsequent exporters could not use these values. This PR corrects
this incorrect behaviour. It also changes error type from Unroutable to NotApplicable when the global consensus
system cannot be extracted from the universal_source, or when the source location cannot be converted to an agent
ID. Lastly, it changes the error type from MissingArgument to NotApplicable when the parachain ID cannot be
extracted from the location. These changes should have no effect - it is purely to correct behvaiour should
multiple exporters be used.

[#4974]: Remove libp2p dependency from sc-network-sync

This PR removes libp2p::request_response::OutboundFailure from substrate/client/network/sync/src/engine.rs.

[#5707]: Remove ValidateFromChainState

Removed the CandidateValidationMessage::ValidateFromChainState, which was previously used by backing, but is no longer relevant since initial async backing implementation

[#5915]: Omni-Node renamings

This PR renames the polkadot-parachain-lib crate to polkadot-omni-node-lib and introduces a new
polkadot-omni-node binary.

[#5883]: statement-distribution RFC103 implementation

Introduces checks for the new candidate descriptor fields: core_index and session_index.

[#5635]: Fix edge case where state sync is not triggered

There is an edge case where the finalized block notification is received, but the conditions required to initiate the
state sync are not fully met. In such cases, state sync would fail to start as expected and remain stalled.
This patch addresses it by storing the pending attempt and trying to start the state sync later when the conditions
are satisfied.

[#4846]: Make approval-voting runnable on a worker thread

Make approval-voting subsystem runnable on a separate worker thread without having to
to always pass to it an orchestra context. It achieves that by refactoring existing functions
to require only the minimal set of traits needed in the function instead of the general
Context

[#5737]: Make syncing service an argument of `build_network`

build_network is accompanied with lower-level build_network_advanced with simpler API that does not create
syncing engine internally, but instead takes a handle to syncing service as an argument. In most cases typical
syncing engine with polkadot syncing strategy and default block downloader can be created with newly introduced
sc_service::build_default_syncing_engine() function, but lower-level build_default_block_downloader also
exists for those needing more customization.

These changes allow developers higher than ever control over syncing implementation, but build_network is still
available for easier high-level usage.

[#5686]: sync: Remove checking of the extrinsics root

Remove checking the extrinsics root as part of the sync code.
With the introduction of system_version and the possibility to use the V1
layout for the trie when calculating the extrinsics root, it would require the
sync code to fetch the runtime version first before knowing which layout to use
when building the extrinsic root.
The extrinsics root is still checked when executing a block on chain.

[#5601]: Introduce `RpcParams` in sc-cli

Refactors and consolidates all RPC-related parameters in the run command into a dedicated RpcParams struct. This change allows downstream users to build custom run command without duplicating code.

[#4849]: Introduce approval-voting-parallel subsystem

This introduces a new subsystem called approval-voting-parallel. It combines the tasks
previously handled by the approval-voting and approval-distribution subsystems.

The new subsystem is enabled by default on all test networks. On production networks
like Polkadot and Kusama, the legacy system with two separate subsystems is still in use.
However, there is a CLI option --enable-approval-voting-parallel to gradually roll out
the new subsystem on specific nodes. Once we are confident that it works as expected,
it will be enabled by default on all networks.

The approval-voting-parallel subsystem coordinates two groups of workers:

Four approval-distribution workers that operate in parallel, each handling tasks based
on the validator_index of the message originator.
One approval-voting worker that performs the tasks previously managed by the standalone
approval-voting subsystem.

[#6218]: Enable approval-voting-parallel by default on kusama

Enable approval-voting-parallel by default on kusama

[#5521]: Allow to call arbitrary runtime apis using RelayChainInterface

This PR adds a call_runtime_api method to RelayChainInterface trait, and a separate function also named call_runtime_api
which allows the caller to specify the input and output types, as opposed to having to encode them.

[#5787]: Move bitfield_distribution to blocking task pool and set capacity to 8192

This is moving bitfield_distribution to the blocking task pool because it does cpu
intensive work and to make it snappier. Additionally, also increase the message
capacity of the subsystem to make sure the queue does not get full if there is a
burst of messages.

[#6156]: Use bool::then instead of then_some with function calls

Fix misusage of bool::then_some.

[#5811]: Improve `import_notification_stream` documentation

"Updates the doc comment on the import_notification_stream to make its behaviour clearer. Now it specifically states that this notification stream is fired on every import notification after the initial sync, and only when there are re-orgs in the initial sync."

[#4639]: Added the fork-aware transaction pool implementation

Most important changes introduced by this PR:

The transaction pool references spread across codebase are now wrapper to a transaction pool trait object,
The fork-aware pool implementation was added.
The sc-transaction-pool refactored,
Trasnaction pool builder was introduced to allow to instantiation of either old or new transaction pool. Refer to PR description for
more details on how to enable fork-aware pool in the custom node.

[#6104]: LocalTransactionPool implemented for fork aware transaction pool

LocalTransactionPool trait is implemented for fork aware transaction pool.

[#5911]: Removed the possibility to start a shell parachain node

Removed the possibility to start a shell parachain node using the polkadot-parachain-lib or
polkadot-parachain-bin.

[#5540]: Avoid unnecessary block gap updates

Previously, the block gap storage in database and state in BlockchainDb could be updated even if no changes occurred.
This commit refines the logic to ensure updates only occur when the block gap value actually changes, reducing unnecessary
writes and enhancing overall efficiency.

[#5592]: Introduce `BlockGap`

This is the first step towards #5406,
refactoring the representation of block gap. This refactor converts the existing
(NumberFor<Block>, NumberFor<Block>) into a dedicated BlockGap<NumberFor<Block>>
struct. This change is purely structural and does not alter existing logic, but lays
the groundwork for the follow-up PR. The compatibility concern in the database caused
by the new structure transition is addressed as well.

The BlockGap refactoring results in breaking changes in the Info structure returned
in client.info().

[#5768]: export NodeHealthProxyLayer

This PR export NodeHealthProxyLayer from sc-rpc-server.

[#5716]: Replace `lazy_static` with `LazyLock`

Replace all lazy_static usages with LazyLock from the Rust standard library. This will bring us less dependencies.

[#5830]: Remove jaeger from approval-voting and approval-distribution

Jaeger was remove from approval-voting and approval-distribution because
it did not prove to improve the debugging and it wasted precious cpu cycles.

[#5856]: Extend state tracking of chainHead to capture notification gaps

This PR extends the state tracking of the RPC-v2 chainHead methods.
ChainHead tracks the reported blocks to detect notification gaps.
This state tracking ensures we can detect NewBlock events for
which we did not report previously the parent hash.

[#5343]: Allow to disable gap creation during block import

New property BlockImportParams::create_gap allows to change whether to create block gap in case block
has no parent (defaults to true keeping existing behavior), which is helpful for sync protocols that do not need
to sync the gap after this happens. BlockImportOperation::create_gap() method was also introduced, though in
most cases BlockImportParams::create_gap will be used.

[#6382]: gensis-config: patching default `RuntimeGenesisConfig` fixed

This PR fixes issue reported in #6306.
It changes the behavior of sc_chain_spec::json_patch::merge function which no longer removes any keys from the base JSON object.

Changelog for `Runtime Dev`

ℹ️ These changes are relevant to: All of those who rely on the runtime. A parachain team that is using a pallet. A DApp that is using a pallet. These are people who care about the protocol (WASM, not the meta-protocol (client).)

[#5838]: enable wasm builder diagnostics propagation

substrate-wasm-builder is used as a build dependency by crates that implement FRAME runtimes.
Errors that occur in these crates can not be detected by IDEs that use rust-analyzer as a language
server because rust-analyzer needs the errors to be reported as diagnostic message in json format to
be able to publish them to language server clients. This PR adds WASM_BUILD_CARGO_ARGS environment
variable, which can hold a space separated list of args that will be parsed and passed to the cargo
command that it is used for building against wasm target. It can be used for the stated initial case,
but it is also flexible enough to allow passing other arguments or formatting the messages using another
available type.

[#5585]: Added SetAssetClaimer instruction to XCM v5.

Added SetAssetClaimer implementation to XCM v5. With asset_claimer set users can retrieve their trapped assets
at any point in time without the need to go through OpenGov reclaim process.

[#6087]: Expose private structs in pallet_nfts and pallet_uniques.

PR changes certain structs in pallet_nfts and pallet_uniques into public. It also changes 2 storages (collection & asset metadata) into public in pallet_uniques.

[#6212]: Added Trusted Query API calls for Westend and Rococo chains

Added is_trusted_reserve and is_trusted_teleporter API calls to relay chains.
Given an asset and a location, they return if the chain trusts that location as a reserve or teleporter for that asset respectively.
You can implement them on your runtime by simply calling a helper function on pallet-xcm.

	impl xcm_runtime_apis::trusted_query::TrustedQueryApi<Block> for Runtime {
  fn is_trusted_reserve(asset: VersionedAsset, location: VersionedLocation) -> Result<bool, xcm_runtime_apis::trusted_query::Error> {
    PolkadotXcm::is_trusted_reserve(asset, location)
  }
  fn is_trusted_teleporter(asset: VersionedAsset, location: VersionedLocation) -> Result<bool, xcm_runtime_apis::trusted_query::Error> {
    PolkadotXcm::is_trusted_teleporter(asset, location)
  }
}

[#6263]: [pallet-revive] Update typeInfo

Update typeinfo impl to make it transparent for subxt

see paritytech/subxt#1845

[#5664]: Calling an address without associated code is a balance transfer

This makes pallet_revive behave like EVM where a balance transfer
is just a call to a plain wallet.

[#6129]: Improved TrustedQueryAPI signatures.

Changed returned type of API methods from Result<bool, xcm_runtime_apis::trusted_query::Error> to a typed one:
type XcmTrustedQueryResult = Result<bool, xcm_runtime_apis::trusted_query::Error>

[#6147]: [pallet-revive] Ethereum JSON-RPC

Add a new Ethereum JSON-RPC server that can be used a substrate chain configured with pallet-revive

[#5555]: Make salt optional

Remove address_len and salt_len from uapi as both are now fixed size

[#5745]: Implement `try_append` for `StorageNMap`

This PR introduces the try_append api which is available on other storage map types,
but missing on StorageNMap.

[#6360]: [eth-rpc] proxy /health

make the eth-rpc proxy /health and /health/readiness from the proxied substrate chain
see #4802

[#6171]: remove parachains_assigner

Remove the code of the parachains_assigner pallet, since coretime was released on all production networks.

[#5640]: [pallet-revive] Move event's topics

Move event's topics inside body

[#6027]: Remove pallet::getter from pallet-offences

This PR removes pallet::getter from pallet-offences from type Reports. It also adds a test to verify that retrieval of Reports still works with storage::getter.

[#5630]: Introduce and Implement the `VestedTransfer` Trait

This PR introduces a new trait VestedTransfer which is implemented by pallet_vesting. With this, other pallets can easily introduce vested transfers into their logic.

[#5201]: Snowbridge free consensus updates

Allow free consensus updates to the Snowbridge Ethereum client if the headers are more than a certain
number of headers apart. Relayers providing valid consensus updates are refunded for updates. Bridge
users are not affected.

[#6169]: [Deprecation] deprecate treasury `spend_local` call and related items

Deprecates spend_local from the treasury pallet and items associated with it.

Migration

For users who were using only `spend_local` before

To replace spend_local functionality configure Paymaster pallet configuration to be PayFromAccount and configure AssetKind to be () and use spend call instead.
This way spend call will function as deprecated spend_local.

Example:

impl pallet_treasury::Config for Runtime {
  ..
  type AssetKind = ();
  type Paymaster = PayFromAccount<Self::Currency, TreasuryAccount>;
  // convert balance 1:1 ratio with native currency
  type BalanceConverter = UnityAssetBalanceConversion;
  ..
}

For users who were already using `spend` with all other assets, except the native asset

Use NativeOrWithId type for AssetKind and have a UnionOf for native and non-native assets, then use that with PayAssetFromAccount.

Example from kitchensink-runtime:

// Union of native currency and assets
pub type NativeAndAssets =
  UnionOf<Balances, Assets, NativeFromLeft, NativeOrWithId<u32>, AccountId>;

impl pallet_treasury::Config for Runtime {
  ..
  type AssetKind = NativeOrWithId<u32>;
  type Paymaster = PayAssetFromAccount<NativeAndAssets, TreasuryAccount>;
  type BalanceConverter = AssetRate;
  ..
}

// AssetRate pallet configuration
impl pallet_asset_rate::Config for Runtime {
  ..
  type Currency = Balances;
  type AssetKind = NativeOrWithId<u32>;
  ..
}

[#5608]: [pallet-revive] update runtime types

Refactor the Ext trait to use U256 instead of BalanceOf or MomentOf

[#4982]: Add useful error logs in pallet-xcm

This PR adds error logs to assist in debugging pallet-xcm.
Additionally, it replaces the usage of log with tracing.

[#5971]: XCMv5 InitiateTransfer can preserve original origin across chains.

Beware: This only works if the following two rules are followed by the chain receiving such
a message.

Alias to interior locations is valid (the exact same behaviour as DescendOrigin)
AssetHub can alias everything (most importantly sibling accounts and ethereum).
These can be set with the Aliasers configuration item, with the following adapters:
AliasChildLocation
AliasOriginRootUsingFilter with AssetHub and Everything
An example of the first one can be seen in asset-hub-westend and of the second one in
penpal-runtime.

[#6418]: Follow up work on TransactionExtension - fix weights and clean up UncheckedExtrinsic

This PR removes the redundant extension version byte from the signed v4 extrinsic, previously
unused and defaulted to 0. The extension version byte is also made to be part of the inherited
implication handed to extensions in General transactions. Also, some system extensions
benchmarks were adjusted through whitelisting to not count the reads for frequently read
storage keys.

[#6384]: Relax requirements on `assign_core`.

Relax requirements for assign_core so that it accepts updates for the last scheduled entry.
This will allow the coretime chain to split up assignments into multiple
messages, which allows for interlacing down to single block granularity.

Fixes: #6102

[#6316]: Migrate pallet-election-provider-multi-phase benchmark to v2 and improve doc

Migrate pallet-election-provider-multi-phase benchmark to v2 and improve doc

[#5995]: Use frame umbrella crate in pallet-proxy and pallet-multisig

Extends the FRAME umbrella crate and uses it in pallet-proxy and pallet-multisig.
Migrates benchmarking from v1 to v2 for pallet-proxy and pallet-multisig.
Allows CI to pick the umbrella crate weights template to run benchmarks.

[#3881]: Introduce a Generic Proving Trie

This PR introduces a Proving Trie object which can be used inside the runtime. This can allow
for things like airdrops where a single hash is stored on chain representing the whole airdrop
and individuals present a proof of their inclusion in the airdrop.

[#6365]: pallet-revive: Use `RUSTUP_TOOLCHAIN` if set

We were not passing through the RUSTUP_TOOLCHAIN variable to the build.rs script of our fixtures. This means that setting the toolchain like cargo +1.81 build had no effect on the fixture build. It would always fall back to the default toolchain.

[#6288]: [pallet-revive] Add metrics to eth-rpc

Add metrics for eth-rpc

[#5861]: [pallet-revive] immutable data storage

This PR introduces the concept of immutable storage data, used for
Solidity immutable variables.

This is a minimal implementation. Immutable data is attached to a contract; to
ContractInfo fixed in size, we only store the length there, and store the immutable
data in a dedicated storage map instead. Which comes at the cost of requiring an
storage read (costly) for contracts using this feature.

We discussed more optimal solutions not requiring any additional storage accesses
internally, but they turned out to be non-trivial to implement. Another optimization
benefiting multiple calls to the same contract in a single call stack would be to cache
the immutable data in Stack. However, this potential creates a DOS vulnerability (the
attack vector is to call into as many contracts in a single stack as possible, where
they all have maximum immutable data to fill the cache as efficiently as possible). So
this either has to be guaranteed to be a non-issue by limits, or, more likely, to have
some logic to bound the cache. Eventually, we should think about introducing the concept
of warm and cold storage reads (akin to EVM). Since immutable variables are commonly
used in contracts, this change is blocking our initial launch and we should only
optimize it properly in follow-ups.

This PR also disables the set_code_hash API (which isn't usable for Solidity contracts
without pre-compiles anyways). With immutable storage attached to contracts, we now want
to run the constructor of the new code hash to collect the immutable data during
set_code_hash. This will be implemented in a follow up PR.

[#3970]: Update Treasury to Support Block Number Provider

The goal of this PR is to have the treasury pallet work on a parachain which does not produce blocks on a regular schedule, thus can use the relay chain as a block provider. Because blocks are not produced regularly, we cannot make the assumption that block number increases monotonically, and thus have new logic to handle multiple spend periods passing between blocks. To migrate existing treasury implementations, simply add type BlockNumberProvider = System to have the same behavior as before.

[#6255]: [pallet-child-bounties] Index child bounties by parent bounty

Index child bounties by their parent bounty, ensuring that their indexes are independent of
child bounties from other parent bounties. This will allow for predictable indexes and the
ability to batch creation and approval calls together.

Migration for Runtime Pallet Instance

Use migration::v1::MigrateToV1Impl storage migration type to translate ids for the active
child bounties and migrate the state to the new schema.

Migration for Clients

Use new ParentTotalChildBounties storage item to iterate over child bounties for a certain
parent bounty;
Use new ChildBountyDescriptionsV1 storage item to get the bounty description instead of
removed ChildBountyDescriptions;
Use V0ToV1ChildBountyIds storage item to look up the new child bounty id for a given
old child bounty id;
Update the child bounty account id derivation from PalletId + "cb" + child_id to
PalletId + "cb" + bounty_id + child_id.

Additional Notes

The ChildBountyCount storage item is deprecated and will be remove in May 2025.

[#6246]: [pallet-revive] implement the block hash API

Bound T::Hash to H256
Implement the block hash API

[#5274]: Enrich metadata IR with associated types of config traits

This feature is part of the upcoming metadata V16. The associated types of the Config trait that require the TypeInfo
or Parameter bounds are included in the metadata of the pallet. The metadata is not yet exposed to the end-user, however
the metadata intermediate representation (IR) contains these types.

Developers can opt out of metadata collection of the associated types by specifying without_metadata optional attribute
to the #[pallet::config].

Furthermore, the without_metadata argument can be used in combination with the newly added #[pallet::include_metadata]
attribute to selectively include only certain associated types in the metadata collection.

[#6205]: pallet-message-queue: Fix max message size calculation

The max size of a message should not depend on the weight left in a given execution context. Instead the max message size depends on the service weights configured for the pallet. A message that may does not fit into on_idle is not automatically overweight, because it may can be executed successfully in on_initialize or in another block in on_idle when there is more weight left.

[#5892]: Treasury: add migration to clean up unapproved deprecated proposals

It is no longer possible to create Proposals storage item in pallet-treasury due to migration from
governance v1 model but there are some Proposals whose bonds are still on hold with no way to release them.
The purpose of this migration is to clear Proposals which are stuck and return bonds to the proposers.

[#5684]: [pallet-revive]

Update xcm runtime api, and fix pallet-revive xcm tests

[#5917]: XCM paid execution barrier supports more origin altering instructions

Updates the AllowTopLevelPaidExecutionFrom barrier to also support messages that
use DescendOrigin or AliasOrigin for altering the computed origin during execution.

[#5813]: build_struct_json_patch macro added

This PR adds a macro that allows to construct a RuntimeGenesisConfig preset
containing only provided fields, while performing the validation of the
entire struct.

Related issue: #5700

[#5194]: FRAME: Support instantiable pallets in tasks.

In FRAME, tasks can now be used in instantiable pallet. Also some fix for expansion with
conditional compilation in construct runtine.

[#6023]: Fix storage in pallet section

Fix compilation of pallet::storage in a pallet section: a local binding definition was not
correctly referenced due to macro hygiene.

[#5526]: Fix enact_candidate weight generation

This PR works around an issue in multivariate linear regression of weight generation.

[#5756]: Improve APIs for Tries in Runtime

This PR introduces a trait ProvingTrie which has all the function you need to use tries in the runtime.
This trait includes the ability to create, query, and prove data in a trie. Another trait ProofToHashes
allows developers to express the computational complexity of proof verification using the proof data.

[#5623]: Generic slashing side-effects

What?
Make it possible for other pallets to implement their own logic when a slash on a balance occurs.

How?
First we abstract the done_slash function of holds::Balanced to it's own trait that any pallet can implement.
Then we add a config type in pallet-balances that accepts a callback tuple of all the pallets that implement this trait.
Finally implement done_slash for pallet-balances such that it calls the config type.
Integration
The default implementation of done_slash is still an empty function, and the new config type of pallet-balances can be set to an empty tuple, so nothing changes by default.

[#6032]: Fix `feeless_if` in pallet section

Fix compilation with pallet::feeless_if in a pallet section: a local binding unexpectely
resolved to a macro definition.

[#5804]: Refactor get_account_id_from_seed / get_from_seed to one common place

get_account_id_from_seed / get_from_seed were copied all over the place. This PR removes unnecessary code duplication.
Keyring::iter() provides the same functionality and is used instead.

[#6473]: add `TransactionSource` to `TransactionExtension::validate`

Add a the source of the extrinsic as an argument in TransactionExtension::validate.
The transaction source can be useful for transactions that should only be valid if it comes from the node. For example from offchain worker.
To update the current code. The transaction source can simply be ignored: _source: TransactionSource

[#5876]: (XCMv5) implement RFC#100, add new InitiateTransfer instruction

There's a new XCM instruction in v5: InitiateTransfer.
It's meant as a general instruction that will do everything (and more) currently
done by InitiateTeleport, InitiateReserveWithdraw and DepositReserveAsset.
Its main feature is the ability to do cross-chains transfers mixing teleported and
reserve transferred assets.

/// Specify which type of asset transfer is required for a particular `(asset, dest)` combination.
pub enum AssetTransferFilter {
	/// teleport assets matching `AssetFilter` to `dest`
	Teleport(AssetFilter),
	/// reserve-transfer assets matching `AssetFilter` to `dest`, using the local chain as reserve
	ReserveDeposit(AssetFilter),
	/// reserve-transfer assets matching `AssetFilter` to `dest`, using `dest` as reserve
	ReserveWithdraw(AssetFilter),
}
/// Cross-chain transfer matching `assets` in the holding register as follows:
///
/// Assets in the holding register are matched using the given list of `AssetTransferFilter`s,
/// they are then transferred based on their specified transfer type:
///
/// - teleport: burn local assets and append a `ReceiveTeleportedAsset` XCM instruction to
///   the XCM program to be sent onward to the `dest` location,
///
/// - reserve deposit: place assets under the ownership of `dest` within this consensus system
///   (i.e. its sovereign account), and append a `ReserveAssetDeposited` XCM instruction
///   to the XCM program to be sent onward to the `dest` location,
///
/// - reserve withdraw: burn local assets and append a `WithdrawAsset` XCM instruction
///   to the XCM program to be sent onward to the `dest` location,
///
/// The onward XCM is then appended a `ClearOrigin` to allow safe execution of any following
/// custom XCM instructions provided in `remote_xcm`.
///
/// The onward XCM also potentially contains a `BuyExecution` instruction based on the presence
/// of the `remote_fees` parameter (see below).
///
/// If a transfer requires going through multiple hops, an XCM program can compose this instruction
/// to be used at every chain along the path, describing that specific leg of the transfer.
///
/// Parameters:
/// - `dest`: The location of the transfer next hop.
/// - `remote_fees`: If set to `Some(asset_xfer_filter)`, the single asset matching
///   `asset_xfer_filter` in the holding register will be transferred first in the remote XCM
///   program, followed by a `BuyExecution(fee)`, then rest of transfers follow.
///   This guarantees `remote_xcm` will successfully pass a `AllowTopLevelPaidExecutionFrom` barrier.
/// - `remote_xcm`: Custom instructions that will be executed on the `dest` chain. Note that
///   these instructions will be executed after a `ClearOrigin` so their origin will be `None`.
///
/// Safety: No concerns.
///
/// Kind: *Command*.
///
InitiateTransfer {
	destination: Location,
	remote_fees: Option<AssetTransferFilter>,
	assets: Vec<AssetTransferFilter>,
	remote_xcm: Xcm<()>,
}

[#6315]: Migrate pallet-election-provider-support-benchmarking benchmark to v2

Migrate pallet-election-provider-support-benchmarking benchmark to v2

[#5665]: [pallet-contracts] remove riscv support

RISC-V support is now being built inside the new fork pallet-revive

[#6148]: Fix migrations for pallet-xcm

pallet-xcm stores some operational data that uses Versioned* XCM types. When we add a new XCM version (XV), we deprecate XV-2 and remove XV-3.
This PR extends the existing MigrateToLatestXcmVersion to include migration for the Queries, LockedFungibles, and RemoteLockedFungibles storage types.
Additionally, more checks were added to try_state for these types.

[#6317]: eth-rpc fixes

Various fixes for the release of eth-rpc & ah-westend-runtime:

Bump asset-hub westend spec version
Fix the status of the Receipt to properly report failed transactions
Fix value conversion between native and eth decimal representation

[#5939]: [pallet-revive] Bump PolkaVM and add static code validation

Statically validate basic block sizes and instructions.

[#5807]: [pallet-revive] last call return data API

This PR adds the EVM chain ID to Config as well as a corresponding runtime API so contracts can query it.

Related issue: paritytech/revive#44

[#5701]: [pallet-revive] uapi: allow create1 equivalent calls

The salt argument should be optional to allow create1 equivalent calls.

[#5941]: `SolochainDefaultConfig`: Use correct `AccountData`

SolochainDefaultConfig by default was setting AccountData to AccountInfo.
Thus, the actual account data was recursively nested the same type. By default
it should be set (), because this is the only reasonable AccountData.

If you have used SolochainDefaultConfig before and did not overwrite, AccountData
you should now overwrite it to AccountInfo or you will need to write a migration to
change the data.

[#6260]: [pallet-revive] code size API

This PR implements the contract API to query the code size of a given address.

[#5888]: parachain-system: send core selector ump signal

Send the core selector ump signal in cumulus. Guarded by a compile time feature called experimental-ump-signals
until nodes are upgraded to a version that includes #5423 for
gracefully handling ump signals.

[#5693]: Remove `sp_runtime::RuntimeString` and replace with `Cow<'static, str>` or `String` depending on use case

Deprecate RuntimeString, replace with String or Cow<'static, str> where appropriate.

For downstream projects the upgrade will primarily consist of following two changes:

#[sp_version::runtime_version]
pub const VERSION: RuntimeVersion = RuntimeVersion {
-	spec_name: create_runtime_str!("statemine"),
-	impl_name: create_runtime_str!("statemine"),
+	spec_name: alloc::borrow::Cow::Borrowed("statemine"),
+	impl_name: alloc::borrow::Cow::Borrowed("statemine"),

		fn dispatch_benchmark(
			config: frame_benchmarking::BenchmarkConfig
-		) -> Result<Vec<frame_benchmarking::BenchmarkBatch>, sp_runtime::RuntimeString> {
+		) -> Result<Vec<frame_benchmarking::BenchmarkBatch>, alloc::string::String> {

SCALE encoding/decoding remains the same as before, but serde encoding in runtime has changed from bytes to string (it was like this in std environment already).

[#6278]: [pallet-revive] rpc server add docker file

Add a docker for pallet-revive eth-rpc

Tested with

sudo docker build . -t eth-rpc -f substrate/frame/revive/rpc/Dockerfile
sudo docker run --network="host" -e RUST_LOG="info,eth-rpc=debug" eth-rpc

[#4251]: MBM `try-runtime` support

MBM try-runtime support

This MR adds support to the try-runtime
trait such that the try-runtime-CLI will be able to support MBM testing here.
It mainly adds two feature-gated hooks to the SteppedMigration hook to facilitate
testing. These hooks are named pre_upgrade and post_upgrade and have the
same signature and implications as for single-block migrations.

Integration

To make use of this in your Multi-Block-Migration, just implement the two new hooks and test pre- and post-conditions in them:

#[cfg(feature = "try-runtime")]
fn pre_upgrade() -> Result<Vec<u8>, frame_support::sp_runtime::TryRuntimeError>
{
  // ...
}

#[cfg(feature = "try-runtime")]
fn post_upgrade(prev: Vec<u8>) -> Result<(), frame_support::sp_runtime::TryRuntimeError> {
    // ...
}

You may return an error or panic in these functions to indicate failure.
This will then show up in the try-runtime-CLI and can be used in CI for testing.

Changes:

Adds try-runtime gated methods pre_upgrade and post_upgrade
on SteppedMigration
Adds try-runtime gated methods nth_pre_upgrade
and nth_post_upgrade on SteppedMigrations
Modifies pallet_migrations
implementation to run pre_upgrade and post_upgrade steps at the appropriate times, and panic in the event of migration failure.

[#6291]: migrate pallet-remarks to v2 bench syntax

Part of:

#6202

[#6187]: [pallet-revive] rework balance transfers

This PR removes the transfer syscall and changes balance transfers to make the existential deposit (ED) fully transparent for contracts.

The transfer API is removed since there is no corresponding EVM opcode and transferring via a call introduces barely any overhead.

We make the ED transparent to contracts by transferring the ED from the call origin to nonexistent accounts. Without this change, transfers to nonexistant accounts will transfer the supplied value minus the ED from the contracts viewpoint, and consequentially fail if the supplied value lies below the ED. Changing this behavior removes the need for contract code to handle this rather annoying corner case and aligns better with the EVM. The EVM charges a similar deposit from the gas meter, so transferring the ED from the call origin is practically the same as the call origin pays for gas.

[#6174]: [pallet-revive] fix fixture build path

Fix fixture build path

[#5682]: Introduces `VerifyExistenceProof` trait

Introduces VerifyExistenceProof trait for verifying proofs in the runtime.
An implementation of the trait for binary and 16 patricia merkle tree is provided.

[#6221]: snowbridge: allow account conversion for Ethereum accounts

Replaced GlobalConsensusEthereumConvertsFor with EthereumLocationsConverterFor that allows Location
to AccountId conversion for the Ethereum network root as before, but also for Ethereum contracts and accounts.

[#6305]: Remove `riscv` feature flag

Since #6266 we no longer require a custom toolchain to build the pallet-revive-fixtures. Hence we no longer have to guard the build behind a feature flag.

[#5765]: Added foreign locations to local accounts converter to all the parachains.

Added foreign locations to local accounts converter to all the parachains.
i.e. added HashedDescription<AccountId, DescribeFamily> to LocationToAccountId

[#6496]: Backport #6418 to `stable2412`

This PR is a backport of #6418.

For context, TransactionExtension, introduced in #3685, is part of the stable2412 release, and this PR brings important fixes and quality of life improvements. Doing the backport now allows us to not break the interface later.

Opened against #6473 as the changes in the original PR were made on top of the changes in this backport.

[#5502]: [pallet-revive] Add pallet to AH westend

Add pallet-revive to Westend runtime, and configure the runtime to accept Ethereum signed transaction

[#5866]: [pallet-revive] Ethereum JSON-RPC integration

Changes Included:

A new pallet::call eth_transact.
A custom UncheckedExtrinsic struct to dispatch unsigned eth_transact calls from an Ethereum JSON-RPC proxy.
Generated types and traits to support implementing a JSON-RPC Ethereum proxy.

[#6039]: Added Trusted Query API calls.

Added is_trusted_reserve and is_trusted_teleporter API calls to all the runtimes.
Given an asset and a location, they return if the chain trusts that location as a reserve or teleporter for that asset respectively.
You can implement them on your runtime by simply calling a helper function on pallet-xcm.

	impl xcm_runtime_apis::trusted_query::TrustedQueryApi<Block> for Runtime {
  fn is_trusted_reserve(asset: VersionedAsset, location: VersionedLocation) -> Result<bool, xcm_runtime_apis::trusted_query::Error> {
    PolkadotXcm::is_trusted_reserve(asset, location)
  }
  fn is_trusted_teleporter(asset: VersionedAsset, location: VersionedLocation) -> Result<bool, xcm_runtime_apis::trusted_query::Error> {
    PolkadotXcm::is_trusted_teleporter(asset, location)
  }
}

[#6257]: fix claim queue size when validator groups count is smaller

Fixes a bug introduced in #5461, where the claim queue would contain entries even if the validator groups storage is empty (which happens during the first session). This PR sets the claim queue core count to be the minimum between the num_cores param and the number of validator groups.

[#6192]: [pallet-revive] fix hardcoded gas in tests

Fix hardcoded gas limits in tests

[#6141]: Improve `CheckMetadataHash` transaction extension weight and logic

The compilation now panics if the optional compile-time environment variable RUNTIME_METADATA_HASH contains an invalid value.
The weight for the CheckMetadataHash transaction extension is more accurate as it is almost compile-time.

[#4257]: Rename `state_version` in `RuntimeVersion` to `system_version`.

This PR renames state_version in RuntimeVersion to system_version. system_version=2 signifies
that extrinsic root derivation uses StateVersion::V1.

[#6088]: [pallet-revive] EXTCODEHASH to match EIP-1052

Update ext_code_hash to match EIP-1052 specs.

[#6318]: Refactor pallet claims

Adds bounds on stored types for pallet claims.
Migrates benchmarking from v1 to v2 for pallet claims.

[#6025]: Refactor staking pallet benchmarks to `v2`

Update benchmarks in staking pallet to the second version of the frame_benchmarking runtime benchmarking framework.

[#5556]: Make salt optional

By making salt optional we allow clients to use CREATE1 semantics
when deploying a new contract.

[#5726]: revive: Limit the amount of static memory

Limit the amount of static memory a contract can declare.

[#6299]: migrate pallet-recovery to benchmark V2 syntax

migrate pallet-recovery to benchmark V2 syntax

[#5548]: Use H160 when interfacing with contracts

When interfacing with a contract we now use the native ethereum address
type and map it to AccountId32 when interfacing with the rest
of substrate.

[#6264]: pallet-revive: Trade code size for call stack depth

This will reduce the call stack depth in order to raise the allowed code size. Should allow around 100KB of instructions. This is necessary to stay within the memory envelope. More code size is more appropriate for testing right now. We will re-evaluate parameters once we have 64bit support.

[#5845]: Fix compilation after renaming some of benchmarks in pallet_revive.

Changed the "instr" benchmark so that it should no longer return to little weight. It is still bogus but at least benchmarking should not work.

[#5891]: Add benchmark overhead command to frame-omni-bencher

This adds the benchmark overhead command to the frame-omni-bencher library. This allows
para- and relay chain teams to generate extrinsic and block base weights.

[#5872]: [omni-bencher] Make all runtimes work

Changes:

Add --exclude-pallets to exclude some pallets from runtimes where we dont have genesis presets yet
Make --genesis-builder-policy=none work with --runtime
CI: Run the frame-omni-bencher for all runtimes

[#5886]: Bump some dependencies

This bumps ethbloom, ethereum-types, primitive-types and rlp to their latest version.

Fixes: #5870

[#6295]: Migrate pallet-im-online benchmark to v2

Part of:

#6202.

[#6261]: Add missing events to identity pallet

Extrinsics from pallet_identity that were missing an event emission on success now emit one.

[#6073]: Refactor `pallet-grandpa` benchmarks to `v2`

Update benchmarks in GRANDPA pallet to use the second version of the frame_benchmarking runtime benchmarking framework.

[#6314]: Migrate pallet-elections-phragmen benchmark to v2 and improve doc

Part of:

#6202.

[#6296]: Migrate pallet-glutton benchmark to v2

Update pallet-glutton to benchmarks v2.

[#5675]: [pallet-revive] Add balance_of syscyall for fetching foreign balances

This adds an API method balance_of, corresponding to the BALANCE EVM opcode.

[#5779]: [pallet-revive] last call return data API

This PR introduces 2 new syscall: return_data_size and return_data_copy,
resembling the semantics of the EVM RETURNDATASIZE and RETURNDATACOPY opcodes.

The ownership of ExecReturnValue (the return data) has moved to the Frame.
This allows implementing the new contract API surface functionality in ext with no additional copies.
Returned data is passed via contract memory, memory is (will be) metered,
hence the amount of returned data can not be statically known,
so we should avoid storing copies of the returned data if we can.
By moving the ownership of the exectuables return value into the Frame struct we achieve this.

A zero-copy implementation of those APIs would be technically possible without that internal change by making
the callsite in the runtime responsible for moving the returned data into the frame after any call.
However, resetting the stored output needs to be handled in ext, since plain transfers will not affect the
stored return data (and we don't want to handle this special call case inside the runtime API).
This has drawbacks:

It can not be tested easily in the mock.
It introduces an inconsistency where resetting the stored output is handled in ext,
but the runtime API is responsible to store it back correctly after any calls made.
Instead, with ownership of the data in Frame, both can be handled in a single place.
Handling both in fn run() is more natural and leaves less room for runtime API bugs.

The returned output is reset each time before running any executable in a nested stack.
This change should not incur any overhead to the overall memory usage as only the returned data from the last
executed frame will be kept around at any time.

[#5743]: [pallet-revive] write sandbox output according to the provided output buffer length

Instead of error out if the provided output buffer is smaller than what we want to write,
we can just write what fits into the output buffer instead.
We already write back the actual bytes written to the in-out pointer,
so contracts can check it anyways.

This in turn introduces the benefit of allowing contracts to implicitly request only a portion
of the returned data from calls and incantations.
Which is especially beneficial for YUL as the call family opcodes have a return data size
argument and this change removes the need to work around it in contract code.

[#4012]: `impl_runtime_apis!`: replace the use of `Self` with `Runtime`

Currently, if there is a type alias similar to type HeaderFor<T> in the scope, it makes sense to expect that
HeaderFor<Runtime> and HeaderFor<Self> are equivalent. However, this is not the case. It currently leads to
a compilation error that Self is not in scope, which is confusing. This PR introduces a visitor, similar to
CheckTraitDecl in decl_runtime_apis!, ReplaceSelfImpl. It identifies usage of Self as a type argument in
impl_runtime_apis! and replaces Self with an explicit Runtime type.

For example, the following example code will be transformed before expansion:

impl apis::Core<Block> for Runtime {
    fn initialize_block(header: &HeaderFor<Self>) -> ExtrinsicInclusionMode {
        let _: HeaderFor<Self> = header.clone();
        RuntimeExecutive::initialize_block(header)
    }
}

Instead, it will be passed to macro as:

impl apis::Core<Block> for Runtime {
    fn initialize_block(header: &HeaderFor<Runtime>) -> ExtrinsicInclusionMode {
        let _: HeaderFor<Runtime> = header.clone();
        RuntimeExecutive::initialize_block(header)
    }
}

Changelog for `Node Operator`

ℹ️ These changes are relevant to: Those who don't write any code and only run code.

[#5741]: make RPC endpoint `chainHead_v1_storage` faster

The RPC endpoint chainHead_v1_storage now relies solely on backpressure to
determine how quickly to serve back values instead of handing back a fixed number
of entries and then expecting the client to ask for more. This should improve the
throughput for bigger storage queries significantly.

Benchmarks using subxt on localhost:

Iterate over 10 accounts on westend-dev -> ~2-3x faster
Fetch 1024 storage values (i.e, not descedant values) -> ~50x faster
Fetch 1024 descendant values -> ~500x faster

[#4889]: Add CLI options for parachain chain specifications + fix bug for swallowing custom fields

Parachain ID and relay chain can be specified via the CLI arguments for when creating a chain spec.
A bug that also swallowed custom fields outside of the default config has also been fixed.

[#4639]: Added the fork-aware transaction pool implementation

New command line option was added, allowing to select implementation of transaction pool:
- --pool-type=fork-aware - new fork aware transaction pool,
- --pool-type=single-state - old transaction pool implementation which is still default,

[#6058]: backpressure `chainhead_v1_follow`

The RPC endpoint chainHead_v1_follow now relies on backpressure
to determine whether or not the subscription should be closed instead of continuing to send more events
to a consumer which can't keep up.
This should significantly improve memory consumption as substrate will be keeping less messages in memory.

[#6454]: rpc server: fix ipv6 host filter for localhost

This PR fixes that ipv6 connections to localhost was faulty rejected by the host filter because only [::1] was allowed

[#5606]: Fix PVF precompilation for Kusama

Tweaks the PVF precompilation on Kusama to allow prepare PVFs when the node is an authority but not a validator.

Changelog for `Runtime User`

ℹ️ These changes are relevant to: Anyone using the runtime. This can be a token holder or a dev writing a front end for a chain.

[#6212]: Added Trusted Query API calls for Westend and Rococo chains

There's a new runtime API to check if a chain trust a Location as a reserve or teleporter for a given Asset.
It's implemented in all the relays and system parachains in Westend and Rococo.

[#5971]: XCMv5 InitiateTransfer can preserve original origin across chains.

The new InitiateTransfer instruction can preserve the original origin across chains by
setting preserve_origin: true in the instruction itself.
When it's set to true, it will append after the inner XCM, an AliasOrigin instruction
instead of the usual ClearOrigin.
This instruction will try to alias to the original origin, thus preserving it.
This only works if the chain receiving the transfer supports the aliasing operation.
If not, preserve_origin: false works as before and will never fail because of this.

[#5999]: Westend: Constant yearly emission

Integrating the new inflation approach from polkadot-fellows/runtimes#471
into Westend first to check that it is working.

[#6357]: New runtime api that returns the associated pool accounts with a nomination pool.

Each nomination pool has two associated pot accounts: the bonded account, where funds are pooled for staking, and
the reward account. This update introduces a runtime api that clients can query to retrieve these accounts.

[#6373]: `chain-spec-builder`: info about patch/full files added

There was no good example of what is patch and full genesis config file. Some explanation and example were added to the chain-spec-builder doc.

[#5435]: Support registering assets on Asset Hubs over bridge

Allows one Asset Hub on one side, to register assets on the other Asset Hub over the bridge.
Rococo <> Ethereum test bridge will be dropped in favor of Westend <> Ethereum test bridge.
This PR also changes emulated tests to simulate double bridging from Ethereum<>Westend<>Rococo.

[#5984]: Add page information to staking::PayoutStarted event

Adds page index that is claimed, and optional next page that can be claimed. If next is none, then the page is the
last one.

[#5765]: Added foreign locations to local accounts converter to all the parachains.

Now any user account can have a sovereign account on another chain controlled by the original account.

[#6039]: Added Trusted Query API calls.

There's a new runtime API to check if a chain trust a Location as a reserve or teleporter for a given Asset.
It's implemented in all the relays and system parachains in Westend and Rococo.

[#4257]: Rename `state_version` in `RuntimeVersion` to `system_version`.

RuntimeVersion's state_version is renamed to system_version. Applications using that type and its field
must update their code to reflect the changes. For easier migration serde serialization produces both new
systemVersion and old stateVersion fields and deserialization supports stateVersion as an alias as too.

[#6337]: Don't expose metadata for Runtime APIs that haven't been implemented

Prior to this PR, the metadata for runtime APIs would contain all methods for the
latest version of each API, regardless of which version a runtime implements. This
PR fixes that, so that the runtime API metadata reflects what is actually implemented.

[#5687]: Westend/Rococo Asset Hub: auto incremented asset id for trust backed assets

Setup auto incremented asset id to 50_000_000 for trust backed assets.

Migration

This change does not break the API but introduces a new constraint. It implements
an auto-incremented ID strategy for Trust-Backed Assets (50 pallet instance indexes on both
networks), starting at ID 50,000,000. Each new asset must be created with an ID that is one
greater than the last asset created. The next ID can be fetched from the NextAssetId
storage item of the assets pallet. An empty NextAssetId storage item indicates no
constraint on the next asset ID and can serve as a feature flag for this release.

[#6080]: Assets in pool with native can be used in query_weight_to_asset_fee in Asset Hubs

query_weight_to_asset_fee now works with assets in a pool with the native asset in both
Westend and Rococo asset hubs.
This means all the information you get from query_acceptable_payment_assets can be used
directly in query_weight_to_asset_fee to get the correct fees that need to be paid.

[#6022]: [Coretime chain] Add high assignment count mitigation to testnets

We can handle a maximum of 28 assignments inside one XCM, while it's possible to have 80 (if a
region is interlaced 79 times). This can be chunked on the coretime chain side but currently the
relay does not support this. This PR truncates the additional assignments on Rococo and Westend
to mitigate this until the relay is fixed. The first 27 assignments are taken, the final 28th is
used to pad with idle to complete the mask. Any other assignments are dropped.

Rust compiler versions

This release was built and tested against the following versions of rustc.
Other versions may work.

Rust Stable: "1.81.0"

Runtimes

The information about the runtimes included in this release can be found below.
The runtimes have been built using srtool v0.17.0 and rustc 1.81.0 (eeb90cda1 2024-09-04).

Westend

🏋️ Runtime Size:          2.17 MB (2276274 bytes)
🔥 Core Version:          westend-1017000 (parity-westend-0.tx27.au2)
🗜 Compressed:            Yes: 77.66%
🎁 Metadata version:      V14
🗳️ system.setCode hash:   0xb69633ecd19421701ada6b20a75b85ef71ee13444b73715997685b9eb48a9ce7
🗳️ authorizeUpgrade hash: 0x9feed154c0beae50dde795e81d54e0e74b329640cef07ee37af4223eac5ba65c
🗳️ Blake2-256 hash:       0xfef8c0b3125bb5c741d9b0ee09d51977df31280c87cbab6fe99efba6a301ec07
📦 IPFS:                  QmaGFq7tgt3v4eycPfW9PVcy39kzH9Mg2H65aG8g4pa5GH

Westend Assethub

🏋️ Runtime Size:          1.71 MB (1791348 bytes)
🔥 Core Version:          westmint-1017000 (westmint-0.tx16.au1)
🗜 Compressed:            Yes: 79.76%
🎁 Metadata version:      V14
🗳️ system.setCode hash:   0x252b7015b39103dbf2c8ece6d1aba07f78ca4893eaa5017ae2185e5aa36b7a29
🗳️ authorizeUpgrade hash: 0x68fd196574d186e6d01ae9104fb828afd6e0ddff09ed6bd7423379e4050c73ab
🗳️ Blake2-256 hash:       0xe1833305e032548c959638239d2c8aa9d63979789cca44b8d89089e0ef479e99
📦 IPFS:                  QmWN2DVGERkXhaJum3vYnYPEUq3yVnKAGxmo4FQ16LsbN4

Westend Bridgehub

🏋️ Runtime Size:          1.48 MB (1551445 bytes)
🔥 Core Version:          bridge-hub-westend-1017000 (bridge-hub-westend-0.tx6.au1)
🗜 Compressed:            Yes: 77.43%
🎁 Metadata version:      V14
🗳️ system.setCode hash:   0x8a1e49e12645f4fb4e90e2ade387498c0305ace95ff6a7a8b6465fa7c45b0998
🗳️ authorizeUpgrade hash: 0x4fac0f4834d51acff4ef90313334e8300d991e6aae6b1083b306ad03f851adc0
🗳️ Blake2-256 hash:       0xb21a63fb365093c39d364a58a6b24ad72f9e4caf3c9a34e0bbba621b8c286a19
📦 IPFS:                  QmPQoZv1jRSshNAysYRM1vbEHkouZWJP7EAhBkk99HFjqj

Westend Collectives

🏋️ Runtime Size:          1.30 MB (1364876 bytes)
🔥 Core Version:          collectives-westend-1017000 (collectives-westend-0.tx6.au1)
🗜 Compressed:            Yes: 78.95%
🎁 Metadata version:      V14
🗳️ system.setCode hash:   0x38e4972d9ca49f89cd81a5d22d465c8c8979908afab72a943a955caa72e0dfa8
🗳️ authorizeUpgrade hash: 0xbbc0b9d36fa777ddfe3395b5a38dc668db6cabb7cc6716f52f93391310600859
🗳️ Blake2-256 hash:       0x77d4334d3daac1c7b09a612edd5243dfb5cf6ef82eaec274f02346abd65b6979
📦 IPFS:                  QmfZACsBwUkuJJwhnhPF4BB2LUffyBF6Sf9i5kwvGF7i6v

Westend Coretime

🏋️ Runtime Size:          1.11 MB (1161545 bytes)
🔥 Core Version:          coretime-westend-1017000 (coretime-westend-0.tx2.au1)
🗜 Compressed:            Yes: 78.3%
🎁 Metadata version:      V14
🗳️ system.setCode hash:   0x3fa7581b693104b08b23935047098e7c870e30a006e3f65db9c9d86187b55b78
🗳️ authorizeUpgrade hash: 0x3c8f445dfd6dcfb07ca112d1a6a66d5120c13531001bfe415fdd5e2685e3513d
🗳️ Blake2-256 hash:       0x6d076b5d2208a130835f0a3f368cb2ddb5fc13e71c7613bfc466e7e71797d341
📦 IPFS:                  QmSingJGrmQzS1BzaX5aE36BifwxYCDkiSevSPFVDakwA7

Westend Glutton

🏋️ Runtime Size:          639.18 kB (654516 bytes)
🔥 Core Version:          glutton-westend-1017000 (glutton-westend-0.tx1.au1)
🗜 Compressed:            Yes: 75.93%
🎁 Metadata version:      V14
🗳️ system.setCode hash:   0xde652a4f6049a4afc88563d0c7eb57dd8c0635a31f80186e64b91e8822793131
🗳️ authorizeUpgrade hash: 0x40a4a3d1a53b2add6c432a17d80ddeac170ebe604924050be19c38c3822b168f
🗳️ Blake2-256 hash:       0xcb4a37d664eec9d2eedbaea1ad7f521b451f11a409e74f24da2fef39c7044094
📦 IPFS:                  QmetKPgey9MB813LW2DMMCCrNo6YoRXtSsMSmuRKWb7PQU

Westend People

🏋️ Runtime Size:          1.11 MB (1166746 bytes)
🔥 Core Version:          people-westend-1017000 (people-westend-0.tx2.au1)
🗜 Compressed:            Yes: 78.26%
🎁 Metadata version:      V14
🗳️ system.setCode hash:   0xe3e9fc169775117d216248a81b6a846d8d7e8ab44860a43f1fd1877f54bf9942
🗳️ authorizeUpgrade hash: 0xdfdc14f49dd5ce31b571f07ddd781f6d73437d5d4917409f74c71a23cd721caa
🗳️ Blake2-256 hash:       0x2395a1aa47be2f8c4fdf46f500c367c9927520a143365fd8c59f3468a5683ae2
📦 IPFS:                  QmY9UiZNrBJFrTaLg4KJdrwZkGAdSooT28jv6DcwmcmAKR

Docker images

The docker images for the polkadot node binary and the polkadot-parachain binary can be found at Docker hub (will be available a few minutes after the release has been published):

You may also pull it with:

docker pull parity/polkadot:stable2412-rc2

docker pull parity/polkadot-parachain:stable2412-rc2

Polkadot stable2412-rc2

Changelog

Changelog for Node Dev

[#5880]: Fix prospective parachains test to use shuffled candidate list

[#5847]: candidate-validation: RFC103 implementation

[#6015]: Rename QueueEvent::StartWork

[#6268]: Bump a timeout in zombienet coretime smoke test

[#5919]: substrate-offchain: upgrade hyper to v1

[#5924]: Bump PoV request timeout

[#5774]: Avoid unnecessary state reset of allowed_requests when no block requests are sent

[#5762]: Fast return for invalid request of node health

[#5908]: collation-generation: use v2 receipts

[#6011]: collator protocol: validate descriptor version on the validator side

[#5469]: Syncing strategy refactoring

[#5038]: Plumb RPC listener up to caller

[#4837]: Add PVF execution priority

[#5666]: Make syncing strategy an argument of the syncing engine

[#5789]: Prevents EthereumBlobExporter from consuming parameters when returning NotApplicable

[#4974]: Remove libp2p dependency from sc-network-sync

[#5707]: Remove ValidateFromChainState

[#5915]: Omni-Node renamings

[#5883]: statement-distribution RFC103 implementation

[#5635]: Fix edge case where state sync is not triggered

[#4846]: Make approval-voting runnable on a worker thread

[#5737]: Make syncing service an argument of build_network

[#5686]: sync: Remove checking of the extrinsics root

[#5601]: Introduce RpcParams in sc-cli

[#4849]: Introduce approval-voting-parallel subsystem

[#6218]: Enable approval-voting-parallel by default on kusama

[#5521]: Allow to call arbitrary runtime apis using RelayChainInterface

[#5787]: Move bitfield_distribution to blocking task pool and set capacity to 8192

[#6156]: Use bool::then instead of then_some with function calls

[#5811]: Improve import_notification_stream documentation

[#4639]: Added the fork-aware transaction pool implementation

[#6104]: LocalTransactionPool implemented for fork aware transaction pool

[#5911]: Removed the possibility to start a shell parachain node

[#5540]: Avoid unnecessary block gap updates

[#5592]: Introduce BlockGap

[#5768]: export NodeHealthProxyLayer

[#5716]: Replace lazy_static with LazyLock

[#5830]: Remove jaeger from approval-voting and approval-distribution

[#5856]: Extend state tracking of chainHead to capture notification gaps

[#5343]: Allow to disable gap creation during block import

[#6382]: gensis-config: patching default RuntimeGenesisConfig fixed

Changelog for Runtime Dev

[#5838]: enable wasm builder diagnostics propagation

[#5585]: Added SetAssetClaimer instruction to XCM v5.

[#6087]: Expose private structs in pallet_nfts and pallet_uniques.

[#6212]: Added Trusted Query API calls for Westend and Rococo chains

[#6263]: [pallet-revive] Update typeInfo

[#5664]: Calling an address without associated code is a balance transfer

[#6129]: Improved TrustedQueryAPI signatures.

[#6147]: [pallet-revive] Ethereum JSON-RPC

[#5555]: Make salt optional

[#5745]: Implement try_append for StorageNMap

[#6360]: [eth-rpc] proxy /health

[#6171]: remove parachains_assigner

[#5640]: [pallet-revive] Move event's topics

[#6027]: Remove pallet::getter from pallet-offences

[#5630]: Introduce and Implement the VestedTransfer Trait

[#5201]: Snowbridge free consensus updates

[#6169]: [Deprecation] deprecate treasury spend_local call and related items

Migration

For users who were using only spend_local before

For users who were already using spend with all other assets, except the native asset

[#5608]: [pallet-revive] update runtime types

[#4982]: Add useful error logs in pallet-xcm

[#5971]: XCMv5 InitiateTransfer can preserve original origin across chains.

[#6418]: Follow up work on TransactionExtension - fix weights and clean up UncheckedExtrinsic

[#6384]: Relax requirements on assign_core.

[#6316]: Migrate pallet-election-provider-multi-phase benchmark to v2 and improve doc

[#5995]: Use frame umbrella crate in pallet-proxy and pallet-multisig

[#3881]: Introduce a Generic Proving Trie

[#6365]: pallet-revive: Use RUSTUP_TOOLCHAIN if set

[#6288]: [pallet-revive] Add metrics to eth-rpc

[#5861]: [pallet-revive] immutable data storage

[#3970]: Update Treasury to Support Block Number Provider

[#6255]: [pallet-child-bounties] Index child bounties by parent bounty

Migration for Runtime Pallet Instance

Migration for Clients

Changelog for `Node Dev`

[#5847]: `candidate-validation`: RFC103 implementation

[#5737]: Make syncing service an argument of `build_network`

[#5601]: Introduce `RpcParams` in sc-cli

[#5811]: Improve `import_notification_stream` documentation

[#5592]: Introduce `BlockGap`

[#5716]: Replace `lazy_static` with `LazyLock`

[#6382]: gensis-config: patching default `RuntimeGenesisConfig` fixed

Changelog for `Runtime Dev`

[#5745]: Implement `try_append` for `StorageNMap`

[#5630]: Introduce and Implement the `VestedTransfer` Trait

[#6169]: [Deprecation] deprecate treasury `spend_local` call and related items

For users who were using only `spend_local` before

For users who were already using `spend` with all other assets, except the native asset

[#6384]: Relax requirements on `assign_core`.

[#6365]: pallet-revive: Use `RUSTUP_TOOLCHAIN` if set

[#6032]: Fix `feeless_if` in pallet section

[#6473]: add `TransactionSource` to `TransactionExtension::validate`

[#5941]: `SolochainDefaultConfig`: Use correct `AccountData`

[#5693]: Remove `sp_runtime::RuntimeString` and replace with `Cow<'static, str>` or `String` depending on use case

[#4251]: MBM `try-runtime` support

[#5682]: Introduces `VerifyExistenceProof` trait

[#6305]: Remove `riscv` feature flag

[#6496]: Backport #6418 to `stable2412`

[#6141]: Improve `CheckMetadataHash` transaction extension weight and logic

[#4257]: Rename `state_version` in `RuntimeVersion` to `system_version`.

[#6025]: Refactor staking pallet benchmarks to `v2`

[#6073]: Refactor `pallet-grandpa` benchmarks to `v2`