DFINITY Foundation

ICDevs.org

CryptoIsGood

Anvil

ICPL.app

ysyms

The Accumulators’ Neuron

RawTech Venture

Paul Young

ICPMANUAL

8YearGangDAO

Isaac Valadez

Krzysztof Żelazko

Nicolas.ic

Smaug’s Neuron for Retail Investors

ICLight.io

Taggr Network

Sonic AMM

Rakeoff.io

OpenChat

ELNA AI

GEEKFACTORY

ICP Hub México

ICP Hub Poland

Jerry Banfield

WaterNeuron

ICP Hub Bulgaria

Gold DAO

NeuronPool

LORIMER ♾️ 🐶

B3Pay

ZenithCode

Aviate Labs

D-QUORUM

Yuku AI

CO.DELTA △

DragginCorp

Gwojda

Thyassa

🌮 TACO DAO Neuron

Ωmega-reject

Ωmega-vote

αlpha-vote

Cybersecurity

cyberowl

Dexter Caff/acc

CodeGov.org (see neuron merger plan with the Wenzel known neuron)

Wenzel

Synapse (see neuron merger plan with the Wenzel known neuron)

Release Notes for [release-2026-01-29_23-28-base](https://github.com/dfinity/ic/tree/release-2026-01-29_23-28-base) (`6f1ce3bb4c253f1bc4c5f432c7c47b06dccdba7e`)
This release is based on changes since [release-2026-01-22_03-33-base](https://dashboard.internetcomputer.org/release/b0a37d0119a5df1dad84e50dc8717b77978d8f04) (`b0a37d0119a5df1dad84e50dc8717b77978d8f04`).

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-2026-01-22_03-33-base...release-2026-01-29_23-28-base).
## Features:
* [`9d8ad1b43`](https://github.com/dfinity/ic/commit/9d8ad1b43) Consensus(orchestrator): update subnet assignment also on upgrade loop errors ([#7868](https://github.com/dfinity/ic/pull/7868))
* [`3c54a1ef3`](https://github.com/dfinity/ic/commit/3c54a1ef3) Consensus(outcalls): introduce the budget tracker trait. ([#8468](https://github.com/dfinity/ic/pull/8468))
* [`76a5fab9e`](https://github.com/dfinity/ic/commit/76a5fab9e) Consensus: Enable Storing Pre-signatures in Replicated State ([#8460](https://github.com/dfinity/ic/pull/8460))
* [`ff54eb57a`](https://github.com/dfinity/ic/commit/ff54eb57a) Consensus(crypto): set timestamps in pubkey store on key generation ([#8415](https://github.com/dfinity/ic/pull/8415))
* [`b9388aebd`](https://github.com/dfinity/ic/commit/b9388aebd) Consensus(recovery): add launch measurements when electing versions in recoveries ([#8114](https://github.com/dfinity/ic/pull/8114))
* [`40eb3c59a`](https://github.com/dfinity/ic/commit/40eb3c59a) Consensus,Node(node): store SEV chip_ID in registry (registration attestation) ([#8454](https://github.com/dfinity/ic/pull/8454))
* [`0adce6cc0`](https://github.com/dfinity/ic/commit/0adce6cc0) Consensus,DSM(outcalls): maintain payment info in the replicated state ([#8335](https://github.com/dfinity/ic/pull/8335))
* [`97956612d`](https://github.com/dfinity/ic/commit/97956612d) Node: [,] Hopefully resolve udev race ([#8368](https://github.com/dfinity/ic/pull/8368))
* [`51515f75f`](https://github.com/dfinity/ic/commit/51515f75f) Node: Rework interface choice logic in GuestOS ([#8462](https://github.com/dfinity/ic/pull/8462))
* [`3ee59528b`](https://github.com/dfinity/ic/commit/3ee59528b) DSM: Set up StateManagerImpl fields for threading ([#8546](https://github.com/dfinity/ic/pull/8546))
* [`405275ae2`](https://github.com/dfinity/ic/commit/405275ae2) DSM: Add back `Stream::signals_begin` ([#8444](https://github.com/dfinity/ic/pull/8444))
* [`acc3ddfa2`](https://github.com/dfinity/ic/commit/acc3ddfa2) DSM: Improved witness size estimate in XNet payload builder ([#8494](https://github.com/dfinity/ic/pull/8494))
* [`9f32ed453`](https://github.com/dfinity/ic/commit/9f32ed453) DSM: refactor and add height to metadata in certified state (tree) ([#8474](https://github.com/dfinity/ic/pull/8474))
* [`b0cd5a5cf`](https://github.com/dfinity/ic/commit/b0cd5a5cf) DSM: Deterministic memory tracker ([#8108](https://github.com/dfinity/ic/pull/8108))
## Bugfixes:
* [`86f05755f`](https://github.com/dfinity/ic/commit/86f05755f) DSM: Disable canister backtraces ([#8603](https://github.com/dfinity/ic/pull/8603))
* [`d292bce75`](https://github.com/dfinity/ic/commit/d292bce75) DSM: Drop old checkpoint right after manifest computation ([#8499](https://github.com/dfinity/ic/pull/8499))
* [`538a765f9`](https://github.com/dfinity/ic/commit/538a765f9) DSM: Handle overflowing/underflowing fee in `charge_direct` ([#8443](https://github.com/dfinity/ic/pull/8443))
## Performance improvements:
* [`07ea288e4`](https://github.com/dfinity/ic/commit/07ea288e4) Consensus: avoid heavy `IngressMessageId` computation ingress during payload creation in ingress selector ([#7678](https://github.com/dfinity/ic/pull/7678))
* [`b562bf062`](https://github.com/dfinity/ic/commit/b562bf062) DSM: minimize touching PageMap in LogMemoryStore ([#8545](https://github.com/dfinity/ic/pull/8545))
## Chores:
* [`9caf00727`](https://github.com/dfinity/ic/commit/9caf00727) Consensus: rename IC_ADMIN_BIN to IC_ADMIN_PATH ([#8597](https://github.com/dfinity/ic/pull/8597))
* [`24221d7a6`](https://github.com/dfinity/ic/commit/24221d7a6) Consensus(crypto): Make XMD's output length a compile time constant ([#8472](https://github.com/dfinity/ic/pull/8472))
* [`c0761388b`](https://github.com/dfinity/ic/commit/c0761388b) Consensus: Avoid re-export of ICCSA crate ([#8535](https://github.com/dfinity/ic/pull/8535))
* [`142ab6020`](https://github.com/dfinity/ic/commit/142ab6020) Consensus: look up recovery tools from environment ([#8518](https://github.com/dfinity/ic/pull/8518))
* [`aa6a26ea4`](https://github.com/dfinity/ic/commit/aa6a26ea4) Consensus(crypto): Refactoring of ECDSA/Ed25519 related utility crates ([#8455](https://github.com/dfinity/ic/pull/8455))
* [`8e8b06ba4`](https://github.com/dfinity/ic/commit/8e8b06ba4) Consensus(crypto): Remove internal sha2 crypto crate ([#8451](https://github.com/dfinity/ic/pull/8451))
* [`2a275607d`](https://github.com/dfinity/ic/commit/2a275607d) Consensus(subnet_splitting_tool): use `state_tool` library directly instead of executing the binary ([#8465](https://github.com/dfinity/ic/pull/8465))
* [`ccad686b3`](https://github.com/dfinity/ic/commit/ccad686b3) Consensus,DSM: Drop unused dependencies ([#8470](https://github.com/dfinity/ic/pull/8470))
* [`6f1ce3bb4`](https://github.com/dfinity/ic/commit/6f1ce3bb4) Node: Update Base Image Refs and libvirt config ([#8581](https://github.com/dfinity/ic/pull/8581))
* [`f1b5a0a05`](https://github.com/dfinity/ic/commit/f1b5a0a05) Node: Extend PartitionProvider and allow compiling the device crate on Mac ([#8498](https://github.com/dfinity/ic/pull/8498))
* [`b45c10ebc`](https://github.com/dfinity/ic/commit/b45c10ebc) Node: Update Base Image Refs [2026-01-22-0805] ([#8459](https://github.com/dfinity/ic/pull/8459))
* [`d9e7e0487`](https://github.com/dfinity/ic/commit/d9e7e0487) DSM: cleanup LogMemoryStore related code ([#8592](https://github.com/dfinity/ic/pull/8592))
* [`554e5de25`](https://github.com/dfinity/ic/commit/554e5de25) DSM: Drop `skipped_round_due_to_no_messages` canister metric ([#8536](https://github.com/dfinity/ic/pull/8536))
* [`f577e3ce0`](https://github.com/dfinity/ic/commit/f577e3ce0) DSM: Move some fields out of `SchedulerState` ([#8522](https://github.com/dfinity/ic/pull/8522))
* [`65a10ade4`](https://github.com/dfinity/ic/commit/65a10ade4) DSM: Encapsulate `CanisterMetrics` ([#8502](https://github.com/dfinity/ic/pull/8502))
* [`256d2091f`](https://github.com/dfinity/ic/commit/256d2091f) DSM: Encapsulate `SystemState::canister_version` ([#8503](https://github.com/dfinity/ic/pull/8503))
* [`43a3a01f4`](https://github.com/dfinity/ic/commit/43a3a01f4) DSM: Encapsulate `SystemState::canister_id` ([#8501](https://github.com/dfinity/ic/pull/8501))
* [`30659b63e`](https://github.com/dfinity/ic/commit/30659b63e) DSM: Remove `canister_backtrace` flag ([#8422](https://github.com/dfinity/ic/pull/8422))
* [`59bbba24d`](https://github.com/dfinity/ic/commit/59bbba24d) DSM: Move `Stream` constructors into a `testing` module ([#8448](https://github.com/dfinity/ic/pull/8448))
## Refactoring:
* [`2eda28f37`](https://github.com/dfinity/ic/commit/2eda28f37) Consensus(crypto): Refactor key generator functions to take a seed instead of an RNG ([#8467](https://github.com/dfinity/ic/pull/8467))
* [`c61ccecfe`](https://github.com/dfinity/ic/commit/c61ccecfe) DSM: introduce StateManager::update_fast_forward_height ([#8517](https://github.com/dfinity/ic/pull/8517))
* [`4e08ae32f`](https://github.com/dfinity/ic/commit/4e08ae32f) DSM: remove log_memory_limit from log_memory_store ([#8542](https://github.com/dfinity/ic/pull/8542))
* [`1257a736e`](https://github.com/dfinity/ic/commit/1257a736e) DSM: standardise memory unit constants ([#8519](https://github.com/dfinity/ic/pull/8519))
* [`123125286`](https://github.com/dfinity/ic/commit/123125286) DSM: push height down the argument list in various functions ([#8528](https://github.com/dfinity/ic/pull/8528))
* [`06e488016`](https://github.com/dfinity/ic/commit/06e488016) DSM: use `more_asserts` macros for richer test failure messages ([#8488](https://github.com/dfinity/ic/pull/8488))
## Tests:
* [`df7fb30ea`](https://github.com/dfinity/ic/commit/df7fb30ea) Consensus,Node(node): Update nns recovery tests to use rbash-console ([#8526](https://github.com/dfinity/ic/pull/8526))
## Documentation:
## Other changes:
Full list of changes (including the ones that are not relevant to GuestOS) can be found on [GitHub](https://github.com/dfinity/dre/blob/ef0978afdef4c7258032d66fe42430a7b5bf7964/replica-releases/6f1ce3bb4c253f1bc4c5f432c7c47b06dccdba7e.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/6f1ce3bb4c253f1bc4c5f432c7c47b06dccdba7e/ci/scripts/repro-check | python3 - -c 6f1ce3bb4c253f1bc4c5f432c7c47b06dccdba7e --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 6f1ce3b)