DFINITY Foundation

Internet Computer Association

Synapse.vote (formerly ICP Maximalist Network)

Arthur’s Neuron (used to be cycle_dao)

ICDevs.org

CryptoIsGood

Anvil

ICPL.app

The Fools' Court

ysyms

The Accumulators’ Neuron

RawTech Venture

Paul Young

ICPMANUAL

8yeargangDAO

John Wiegley

Isaac Valadez

Krzysztof Żelazko

Always Rejects

Nicolas.ic

Smaug’s Neuron for Retail Investors

# Proposal to Upgrade the ckBTC Minter Canister

Git hash: `d21c69ba055489905bf801a4aea7145f545c9ff8`

New compressed Wasm hash: `27beb221ad4913d2f02833b6b5b4b6ca2af4dbe7a3f1b71baa6a312c1c95de65`

Target canister: `mqygn-kiaaa-aaaar-qaadq-cai`

Previous ckBTC Minter proposal: https://dashboard.internetcomputer.org/proposal/111901

---

## Motivation

This upgrade enables the Know Your Transaction (KYT) integration in the ckBTC minter.
This change has several important consequences:
  * All principals will be able to convert BTC into ckBTC.
  * All BTC -> BTC conversions require an additional fee of 2000 satoshi to cover the KYT costs.
  * The minimum number of confirmations decreases from 72 to 12, meaning converting BTC into ckBTC will be faster.

This proposal relates to proposals [115468](https://dashboard.internetcomputer.org/proposal/115468) and [115470](https://dashboard.internetcomputer.org/proposal/115470), which propose to install and configure the KYT canister.


## Upgrade args

```
git fetch
git checkout d21c69ba055489905bf801a4aea7145f545c9ff8
cd rs/bitcoin/ckbtc/minter
didc encode -d ckbtc_minter.did -t '(MinterArg)' '(variant { Upgrade = opt record { mode = opt variant { GeneralAvailability }; min_confirmations = opt 12; kyt_fee = opt 2000; kyt_principal = opt principal "pjihx-aaaaa-aaaar-qaaka-cai" }})'
```

## Release Notes

```
$ git log --format="%C(auto) %h %s" 6f405daa25e663a5b767d26ac5586785a1c20d7a..d21c69ba055489905bf801a4aea7145f545c9ff8 rs/bitcoin/ckbtc/minter

 823c69d0dbf fix(ckBTC) Upgrade side effect
 c88fa3b34d1 feat(FI-669) Add quarantined utxos to the dashboard
 c8b5fec4650 chore: Limit length of derivation path in ecdsa releated management requests
 cdb86c56ade FI-658 Restructure icrc ledger types repository
 6135d624860 feat(FI-665): allow multiple KYT providers
 0b1ce5dfcd3 feat(FI-632): add optional fee collector to the icrc ledger
 26b5fc2635e fix(FI-661) Some fixes and improvements
 942d975a341 feat(FI-656): record KYT caller user id
 adc5f183ae8 feat(FI-640) integrate KYT into update_balance flow
 949407ea4a4 feat: move icrc1 agent to a standalone icrc-ledger-agent library
 45183ca9dd4 feat: switch icrc1 ledger to the types from the icrc-ledger-types library.
 640e3ca779a feat(ckBTC) Improve date display on dashboard
```

## Wasm Verification

Verify that the hash of the gzipped WASM matches the proposed hash.

```
git fetch
git checkout d21c69ba055489905bf801a4aea7145f545c9ff8
./gitlab-ci/container/build-ic.sh -c
sha256sum ./artifacts/canisters/ic-ckbtc-minter.wasm.gz
```


Upgrade NNS Canister: mqygn-kiaaa-aaaar-qaadq-cai to wasm with hash: 27beb221ad4913d2f02833b6b5b4b6ca2af4dbe7a3f1b71baa6a312c1c95de65