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GEEKFACTORY

# Upgrade the Bitcoin Testnet Canister

## Summary

This update reduces the amount of instructions executed per round when ingesting blocks from 4 billion to 1 billion.
Executing a smaller number of instructions per round should result in lower latencies when handling requests and a more stable finalization rate on the subnet.

## Change Log

* Upgrade rust from 1.70 to 1.76
* Reduce the max instructions of heartbeats from 4B to 1B

## Commit Log

```shell
$ git log --format='%C(auto) %h %s' release/2024-01-22..release/2024-04-26

 c554758 chore: reduce block ingestion instruction limit from 2B to 1B (#294)
 3a0d299 chore: reduce the max instructions of heartbeats from 4B to 2B (#293)
 d467183 fix: canbench can run in dependabot PRs (part 1) (#289)
 567acfc fix (EXC-1590): make burning cycles configurable (#286)
 1efb201 fix: fix ic-http doc test (#287)
 8dc7528 chore: update metadata of validation and test-utils crate (#285)
 b607277 fix: broken CI on master (#284)
 d2bff8a feat: use canbench for benchmarks (#282)
 009784f chore: upgrade rust from 1.70 to 1.76 (#281)
 1692207 chore: revert a workaround for watchdog_health_status test due to fixed IPv4 dfx support (#280)
 b62ce8b chore: bump dfx from 0.15.2 to 0.16.0 (#279)
 22cc992 chore(deps): Bump h2 from 0.3.19 to 0.3.24 (#278)
```

## How can I verify the Wasm hash of this canister?

NOTE: This process is not yet guaranteed to match on M1 Macs.

```shell
# Clone bitcoin-canister repo.
$ git clone git@github.com:dfinity/bitcoin-canister.git
$ cd bitcoin-canister
$ git checkout c554758668467bb998e2ea56de2a112194398170 # release/2024-04-26

# Build all the docker canisters.
$ docker build -t canisters .

# Extract canister's wasm.
$ docker run --rm --entrypoint cat canisters /ic-btc-canister.wasm.gz > ic-btc-canister.wasm.gz

# Calculate SHA-256 of the canister's wasm.
$ sha256sum ic-btc-canister.wasm.gz
```

You should then see the following output:

```shell
6f59d58c24c994f5231eb0051a0fa3118893d960fd47bbd8875e53db21bf027c  ic-btc-canister.wasm.gz
```


Upgrade NNS Canister: g4xu7-jiaaa-aaaan-aaaaq-cai to wasm with hash: 6f59d58c24c994f5231eb0051a0fa3118893d960fd47bbd8875e53db21bf027c