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John Wiegley

## Proposal to Upgrade the Cycles Ledger Canister
##### Proposer: DFINITY Foundation
##### Repository: http://github.com/dfinity/cycles-ledger
##### Git Hash: `01236e4d60738fc2277d47d16b95f28cff564370`
##### Compressed Wasm Hash: `3b628437c41644d7ab6a601559d718a88ec893e9f78901088fffd0c4544d0bea`
##### Argument Hex: `4449444c0000`
##### Target canister: `um5iw-rqaaa-aaaaq-qaaba-cai`

---

## Motivation

Update the cycles ledger canister to include the latest code changes:
* Fixed a bug where refund blocks after an unsuccessful `withdraw` or `create_canister` had the timestamp of the initial burn block instead of the time when the error was processed. Approvals that have expired in the meantime will not be refunded.

## Wasm Verification

```bash
git clone git@github.com:dfinity/cycles-ledger.git
cd cycles-ledger
git checkout 01236e4d60738fc2277d47d16b95f28cff564370
./scripts/docker-build
sha256sum cycles-ledger.wasm.gz
```

## Argument Verification

```bash
didc encode -f hex '()'
```

## Code changes

The current version of the cycles ledger was installed in proposal [134202](https://dashboard.internetcomputer.org/proposal/134202). The full code diff can be viewed [here](https://github.com/dfinity/cycles-ledger/compare/cycles-ledger-v1.0.3...cycles-ledger-v1.0.4).


Upgrade NNS Canister: um5iw-rqaaa-aaaaq-qaaba-cai to wasm with hash: 3b628437c41644d7ab6a601559d718a88ec893e9f78901088fffd0c4544d0bea