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# Upgrade the Registry Canister to Commit 2d4bcba

__Proposer__: jason.zhu at dfinity.org

__Source code__: [2d4bcba47ea10520ff21ce54a8acb9cdb0629317][new-commit]

[new-commit]: https://github.com/dfinity/ic/tree/2d4bcba47ea10520ff21ce54a8acb9cdb0629317


## Features & Fixes

###  Changed

####  Migrate Registry to use ic_stable_structures' MemoryManager

This update migrates registry from using dfn_core to using virtual memory regions provided by ic_stable_structures
MemoryManager.  This allows in the future to migrate the Registry records into stable memory.

####  Automatically replace the nodes when an active API boundary node is replaced

`add_node` will now also automatically replace a node if it is being redeployed and has
been active as an API boundary node before. It will fail if the redeployed node does not
meet the requirements for an API boundary node (i.e., is configured with a domain name).

###  Deprecated

The legacy ECDSA-specific fields are no longer supported in Registry canister's subnet operations
(creation, updating, recovery). Please use the more expressive chain key configuration keys:

* `ecdsa_config` → `chain_key_config`
* `ecdsa_key_signing_enable` → `chain_key_signing_enable`
* `ecdsa_key_signing_disable` → `chain_key_signing_disable`

###  Fixed

####  Backfill node_reward_type for existing nodes

A one-time migration to fill in the `node_reward_type` field for existing nodes was added.  Previously, there was no
on-chain connection between the specific nodes and their reward types.  This data came from off-chain sources
at DFINITY.  In the future, the `node_reward_type` will be used to determine the reward type for each node, and
it will be a required field for node registration in the IC.


## New Commits

```
$ git log --format="%C(auto) %h %s" a5878586e47536d4cd47f0aadb66b73df8131d2b..2d4bcba47ea10520ff21ce54a8acb9cdb0629317 --  ./rs/registry/canister
 5506c7c41e chore: [EXC-1835] Make ic-management-canister-types private (#3814)
 5e85addd44 chore(registry): Remove obsolete ECDSA API (#3827)
 0206830a65 test(btc): Port ckBTC tests from legacy ECDSA to chain key Registry API (#3820)
 b803bf020c feat(registry): Obsolete legacy ECDSA configs (#3709)
 30b3069b8c chore: allow automatically replacing a node even if it is active as an API BN (#3707)
 ec6e895aef refactor(registry): Migrate Registry to use MemoryManager instead of raw stable memory (#3700)
 ae3ab5aa3c refactor(nervous-system): Move Request implementations from canister crates to rs/nervous_system/agent (#3657)
 6d4ecc89e1 chore(registry): Backfill missing node_reward_type records (#3589)
 5c68a63660 feat(ic-nervous-system-agent): Add management canister functions (#3591)
 69748856b6 refactor: Use Principal in RemoveNodeOperatorsPayload, instead of Vec<u8> (#3386)
 f569791cc7 docs(governance): Added 2025-01-20 CHANGELOG.md entries. (#3535)
```


## Current Version

__Current git hash__: a5878586e47536d4cd47f0aadb66b73df8131d2b

__Current wasm hash__: f0fb8fa545b2cc68f030b040e1182a8d004c4d4f4bb4341c9f1b432642c85bef


## Verification

See the general instructions on [how to verify] proposals like this. A "quick
start" guide is provided here.

[how to verify]: https://github.com/dfinity/ic/tree/2d4bcba47ea10520ff21ce54a8acb9cdb0629317/rs/nervous_system/docs/proposal_verification.md


### WASM Verification

See ["Building the code"][prereqs] for prerequisites.

[prereqs]: https://github.com/dfinity/ic/tree/2d4bcba47ea10520ff21ce54a8acb9cdb0629317/README.adoc#building-the-code

```
# 1. Get a copy of the code.
git clone git@github.com:dfinity/ic.git
cd ic
# Or, if you already have a copy of the ic repo,
git fetch
git checkout 2d4bcba47ea10520ff21ce54a8acb9cdb0629317

# 2. Build canisters.
./ci/container/build-ic.sh -c

# 3. Fingerprint the result.
sha256sum ./artifacts/canisters/registry-canister.wasm.gz
```

This should match `wasm_module_hash` field of this proposal.


Upgrade the Registry Canister to Commit 2d4bcba