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Release Notes for [release-2025-08-14\_03-27-base](https://github.com/dfinity/ic/tree/release-2025-08-14_03-27-base) (`1db8f933fdadc81a90e7db2389b081e21263a9b6`)
=================================================================================================================================================================

This release is based on changes since [release-2025-08-07\_03-33-base](https://dashboard.internetcomputer.org/release/047925dfd8386aca91d154054149727131766084) (`047925dfd8386aca91d154054149727131766084`).

Please note that some commits may be excluded from this release if they're not relevant, or not modifying the GuestOS image.
Additionally, descriptions of some changes might have been slightly modified to fit the release notes format.

To see a full list of commits added since last release, compare the revisions on [GitHub](https://github.com/dfinity/ic/compare/release-2025-08-07_03-33-base...release-2025-08-14_03-27-base).

Features:
---------

* [`da40cb4ea`](https://github.com/dfinity/ic/commit/da40cb4ea) Crypto: Add support for subkey derivation to ic-ed25519 and ic-secp256k1 ([#6173](https://github.com/dfinity/ic/pull/6173))
* [`bd1393d54`](https://github.com/dfinity/ic/commit/bd1393d54) Execution,Interface: Add snapshot source to canister history ([#6163](https://github.com/dfinity/ic/pull/6163))
* [`5125d5e8b`](https://github.com/dfinity/ic/commit/5125d5e8b) Execution,Interface: Implement pre-signature stash behind a feature flag ([#6179](https://github.com/dfinity/ic/pull/6179))
* [`f30890a84`](https://github.com/dfinity/ic/commit/f30890a84) Execution,Interface: Extend canister status endpoint ([#6144](https://github.com/dfinity/ic/pull/6144))
* [`388980813`](https://github.com/dfinity/ic/commit/388980813) Interface(ledgers): fix the generic message, add FieldsDisplay ([#5563](https://github.com/dfinity/ic/pull/5563))
* [`84538856c`](https://github.com/dfinity/ic/commit/84538856c) Interface: Add SEV measurements to ReplicaVersionRecord ([#5966](https://github.com/dfinity/ic/pull/5966))
* [`70310a5fb`](https://github.com/dfinity/ic/commit/70310a5fb) Interface(ICP-Ledger): Implement endpoint to reset legacy approvals ([#6121](https://github.com/dfinity/ic/pull/6121))
* [`6290490f9`](https://github.com/dfinity/ic/commit/6290490f9) Interface,Message Routing: Parallel traversal of files in finalize\_checkpoint ([#6185](https://github.com/dfinity/ic/pull/6185))
* [`1905e1dd8`](https://github.com/dfinity/ic/commit/1905e1dd8) Interface,Node: Move disk encryption logic to Rust and support SEV-based disk encryption ([#6170](https://github.com/dfinity/ic/pull/6170))

Bugfixes:
---------

* [`705ab6ab7`](https://github.com/dfinity/ic/commit/705ab6ab7) Consensus,Interface(orchestrator): Gracefully stop orchestrator tasks during replica upgrades ([#5898](https://github.com/dfinity/ic/pull/5898))
* [`358c24213`](https://github.com/dfinity/ic/commit/358c24213) Consensus,Interface: use `/api/v2/subnet/<subnet_id>/read_state` instead of `/api/v2/canister/<effective_canister_id>/read_state` when fetching nns delegation ([#6178](https://github.com/dfinity/ic/pull/6178))

Performance improvements:
-------------------------

* [`8a9e16366`](https://github.com/dfinity/ic/commit/8a9e16366) Consensus,Interface: Remove `anyhow` from P2P code ([#6244](https://github.com/dfinity/ic/pull/6244))
* [`552295bb4`](https://github.com/dfinity/ic/commit/552295bb4) Consensus,Interface: Re-combine peer and user ingress channels ([#5908](https://github.com/dfinity/ic/pull/5908))

Chores:
-------

* [`09571b845`](https://github.com/dfinity/ic/commit/09571b845) Consensus,Interface: Rename `TestSigInputs` ([#6252](https://github.com/dfinity/ic/pull/6252))
* [`34f9ec20d`](https://github.com/dfinity/ic/commit/34f9ec20d) Consensus,Interface: print the raw response when we fail to decode the read state response from the NNS ([#6246](https://github.com/dfinity/ic/pull/6246))
* [`da30c0d38`](https://github.com/dfinity/ic/commit/da30c0d38) Consensus,Interface: drop unused logs ([#6233](https://github.com/dfinity/ic/pull/6233))
* [`39c358e8a`](https://github.com/dfinity/ic/commit/39c358e8a) Consensus,Interface: Use the full pre-signature to determine "oldest registry version in use" ([#6166](https://github.com/dfinity/ic/pull/6166))
* [`65bb95e42`](https://github.com/dfinity/ic/commit/65bb95e42) Consensus,Interface: Report IDKG transcript resolution errors occurring during batch delivery ([#6135](https://github.com/dfinity/ic/pull/6135))
* [`09a91114e`](https://github.com/dfinity/ic/commit/09a91114e) Crypto,Interface,Message Routing: Extra helper functions for hash trees ([#6182](https://github.com/dfinity/ic/pull/6182))
* [`4611dc7ad`](https://github.com/dfinity/ic/commit/4611dc7ad) Execution,Interface: Upgrade Wasmtime 35 ([#6100](https://github.com/dfinity/ic/pull/6100))
* [`3f7bba9a9`](https://github.com/dfinity/ic/commit/3f7bba9a9) Execution,Interface,Message Routing(EXC): Remove unused `call_responded` method on CallContextManager ([#6092](https://github.com/dfinity/ic/pull/6092))
* [`cddf2f8a9`](https://github.com/dfinity/ic/commit/cddf2f8a9) Interface(ICRC\_Ledger): Clean up migration code ([#5627](https://github.com/dfinity/ic/pull/5627))
* [`2ee6ac954`](https://github.com/dfinity/ic/commit/2ee6ac954) Interface(Ledgers): format did files with default formatter ([#6235](https://github.com/dfinity/ic/pull/6235))
* [`853d5f2b6`](https://github.com/dfinity/ic/commit/853d5f2b6) Interface: Add types to utils ([#6186](https://github.com/dfinity/ic/pull/6186))
* [`746c05b97`](https://github.com/dfinity/ic/commit/746c05b97) Owners: upgrade autocfg to 1.5.0 to fix reproducibility ([#6236](https://github.com/dfinity/ic/pull/6236))
* [`a417ed6be`](https://github.com/dfinity/ic/commit/a417ed6be) Owners: don't use separate lockfile for fuzzers ([#6184](https://github.com/dfinity/ic/pull/6184))
* [`fde21389b`](https://github.com/dfinity/ic/commit/fde21389b) Node: removing all mentions of filebeat and log pushing configuration and generation ([#6153](https://github.com/dfinity/ic/pull/6153))
* [`f718b7dbf`](https://github.com/dfinity/ic/commit/f718b7dbf) Node: Update Base Image Refs [2025-08-07-0804] ([#6176](https://github.com/dfinity/ic/pull/6176))

Refactoring:
------------

* [`3fc9c04dd`](https://github.com/dfinity/ic/commit/3fc9c04dd) Consensus,Interface: Remove `ThresholdSigInputsRef` ([#6157](https://github.com/dfinity/ic/pull/6157))

Tests:
------

* [`1d53767ab`](https://github.com/dfinity/ic/commit/1d53767ab) Interface,Node(node): Scaffold initial structure for E2E NNS recovery test ([#6168](https://github.com/dfinity/ic/pull/6168))

---------------------------------------
Full list of changes (including the ones that are not relevant to GuestOS) can be found on [GitHub](https://github.com/dfinity/dre/blob/34153b7bde2e43f9326f74682fe577b70f3c3e2a/replica-releases/1db8f933fdadc81a90e7db2389b081e21263a9b6.md).

# IC-OS Verification

To build and verify the IC-OS GuestOS disk image, after installing curl if necessary (`sudo apt install curl`), run:

```
# From https://github.com/dfinity/ic#verifying-releases
curl -fsSL https://raw.githubusercontent.com/dfinity/ic/master/ci/tools/repro-check | python3 - -c 1db8f933fdadc81a90e7db2389b081e21263a9b6 --guestos
```

The two SHA256 sums printed above from a) the downloaded CDN image and b) the locally built image, must be identical, and must match the SHA256 from the payload of the NNS proposal.

While not required for this NNS proposal, as we are only electing a new GuestOS version here, you have the option to verify the build reproducibility of the HostOS by passing `--hostos` to the script above instead of `--guestos`, or the SetupOS by passing `--setupos`.


Elect new IC/GuestOS revision (commit 1db8f93)