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Release Notes for [**release-2025-04-16\_11-12-base**](https://github.com/dfinity/ic/tree/release-2025-04-16_11-12-base) (c9210f4d299546658760465d7fde93913989f70b)
===================================================================================================================================================================

This release is based on changes since [release-2025-04-11\_13-20-base](https://dashboard.internetcomputer.org/release/579b8ba3a31341f354f4ddb3d60ac44548a91bc2) (579b8ba3a31341f354f4ddb3d60ac44548a91bc2).

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-2025-04-11_13-20-base...release-2025-04-16_11-12-base).

Features:
---------

* [`6b953276b`](https://github.com/dfinity/ic/commit/6b953276b) Consensus,Interface: periodically fetch the nns delegation ([#3902](https://github.com/dfinity/ic/pull/3902))
* [`66ffd5231`](https://github.com/dfinity/ic/commit/66ffd5231) Execution,Interface: Charge for snapshot data download ([#4787](https://github.com/dfinity/ic/pull/4787))
* [`23abac589`](https://github.com/dfinity/ic/commit/23abac589) Execution,Interface: Enable snapshot data download in statemachine tests ([#4729](https://github.com/dfinity/ic/pull/4729))

Bugfixes:
---------

* [`56b0c90d2`](https://github.com/dfinity/ic/commit/56b0c90d2) Consensus,Interface(consnesus): Fix reshare chain key validation ([#4829](https://github.com/dfinity/ic/pull/4829))
* [`7575e49a4`](https://github.com/dfinity/ic/commit/7575e49a4) Execution,Interface: Improve constants in wasm chunk store ([#4712](https://github.com/dfinity/ic/pull/4712))
* [`5599a9860`](https://github.com/dfinity/ic/commit/5599a9860) Interface(ICRC\_Ledger): Recompute ICRC ledger certified data in post upgrade ([#4796](https://github.com/dfinity/ic/pull/4796))
* [`79f0a7d1f`](https://github.com/dfinity/ic/commit/79f0a7d1f) Interface,Message Routing: switch to checkpoint for wasm binaries in canister snapshots ([#4777](https://github.com/dfinity/ic/pull/4777))

Chores:
-------

* [`b60e4861d`](https://github.com/dfinity/ic/commit/b60e4861d) Consensus,Interface(node): Improve orchestrator node\_operator\_private\_key.pem logging ([#4753](https://github.com/dfinity/ic/pull/4753))
* [`6876dcac8`](https://github.com/dfinity/ic/commit/6876dcac8) Consensus,Interface(ic-replay): add more logs to ic-replay ([#4685](https://github.com/dfinity/ic/pull/4685))
* [`d6c72756c`](https://github.com/dfinity/ic/commit/d6c72756c) Execution,Interface: Remove old sandbox rpc calls ([#4728](https://github.com/dfinity/ic/pull/4728))
* [`bd371e73a`](https://github.com/dfinity/ic/commit/bd371e73a) Execution,Interface: EXC: Fix flaky monitor thread test ([#4789](https://github.com/dfinity/ic/pull/4789))
* [`5c0d15487`](https://github.com/dfinity/ic/commit/5c0d15487) Interface,Message Routing: Deserialize wasm with hash always present ([#4734](https://github.com/dfinity/ic/pull/4734))
* [`896a78fbe`](https://github.com/dfinity/ic/commit/896a78fbe) Node: Update Base Image Refs [2025-04-15-0151] ([#4814](https://github.com/dfinity/ic/pull/4814))
* [`f9a54926d`](https://github.com/dfinity/ic/commit/f9a54926d) Node: export hostos config as metric ([#4785](https://github.com/dfinity/ic/pull/4785))

-------------------------------------------
Full list of changes (including the ones that are not relevant to GuestOS) can be found on [GitHub](https://github.com/dfinity/dre/blob/0a417ac5fae47761799065061c480234fbf6b958/replica-releases/c9210f4d299546658760465d7fde93913989f70b.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 c9210f4d299546658760465d7fde93913989f70b --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 c9210f4)