That’s a very good question. I think it’s mainly for pragmatic reasons: the NNS is the biggest and most secure DAO on the IC. The downside is indeed that NNS voters now have the burden of voting on upgrades for this canister.
What are the alternatives?
- You mention an SNS, but how would that work exactly? Would there be a new governance token for the SNS that governs ckBTC? Who would hold that token? Where would its value come from, why would people want to have it? If it is not valuable enough, then a hostile takeover to steal the BTC is possible.
- We could consider some multisig setup, technically very simple, but then who would be the signers?
- Blackhole, no controller. This rules out any further upgrades (outside of fully switching over to new canisters) which makes it very difficult to make further improvements after installing the canisters.
I’m curious to hear your thoughts @LightningLad91. Note also that it’s of course possible for the NNS to give away control of ckBTC to some other controller via a proposal if the voters want to do so (not sure if this is 100% readily available but definitely possible).