chore(ckbtc): NNS proposal to upgrade Bitcoin Checker canister (#3123)

rs/bitcoin/ckbtc/mainnet/btc_checker_upgrade_2024_12_11.md

@@ -0,0 +1,47 @@
+# Proposal to upgrade the BTC Checker canister
+
+Repository: `https://github.com/dfinity/ic.git`
+
+Git hash: `c58e00fe2271d77ede9ccab5a6b317689859ea98`
+
+New compressed Wasm hash: `1e174def478e8324f025eda7f4d723dc76638ed2a1200a3de934850c6ec1da9b`
+
+Upgrade args hash: `1115f49331a1f7e6fddbcab23cdc8932508c193782fa42d80579a19981fe211f`
+
+Target canister: `oltsj-fqaaa-aaaar-qal5q-cai`
+
+Previous BTC Checker proposal: https://dashboard.internetcomputer.org/proposal/134442
+
+---
+
+## Motivation
+
+Upgrade the Bitcoin Checker canister to fix errors when making RPC https calls over http/2 and improve usability.
+
+## Upgrade args
+
+```
+git fetch
+git checkout c58e00fe2271d77ede9ccab5a6b317689859ea98
+cd rs/bitcoin/checker
+didc encode -d btc_checker_canister.did -t '(CheckArg)' '(variant { UpgradeArg = null })' | xxd -r -p | sha256sum
+```
+
+## Release Notes
+
+```
+git log --format='%C(auto) %h %s' f901615f3daa36a5f3a9a6277140e1895ed53d2d..c58e00fe2271d77ede9ccab5a6b317689859ea98 -- rs/bitcoin/checker
+c58e00fe22 fix(ckbtc): Drop Host header from https outcall request (#3115)
+57362c30e3 fix(ckbtc): state schema upgrade (#3071)
+ ```
+
+## Wasm Verification
+
+Verify that the hash of the gzipped WASM matches the proposed hash.
+
+```
+git fetch
+git checkout c58e00fe2271d77ede9ccab5a6b317689859ea98
+"./ci/container/build-ic.sh" "--canisters"
+sha256sum ./artifacts/canisters/ic-btc-checker.wasm.gz
+```