Now, if Monero or pretty much any total shitcoin was a sidechain and I could have the proper level of confidence that I could, autonomously, shift my holdings back to BTC, I'd be all over it. If XMR is as great for privacy as iCEBREAKER claims (again and again and again), fantastic! I'd happily use it whenever I have that need.
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But I don't see why we need Blockstream to do that. Afaics, any altcoin could offer the feature where its coin supply is the number of BTC on specified reserve on the Bitcoin blockchain (using the methods devised by Blockstream).
Where I see something like Blockstream being of enduring value is that I'm not going to be checking every line of code of every (of the many) sidechains I want to peg. The stamp of approval from some organization I trust is what I would be using to make a judgement.
Of course in the early stages there is a lot of fairly intricate work to get the crypto and certain aspects of the security developed.
I focus on the makeup of the Blockstream group significantly for these reasons. Indeed, it is because sipa and Maxwell in particular are involved in Bitcoin core that I retain the position that I do. I would probably have sold a lot more (or tried to) at the $1000 mark if Gavin was the main guy actually doing things. Ironically it looks like Maxwell might have done me a dis-service by lending Bitcoin credibility at a time when I should have been bailing.
Edit: there is one way side chains enable scaling. That is the side chain is a centralized ledger. So if the masses can be enticed to spend their BTC into the Coinbase+Paypal+Circle cartel side chain, then it can scale easily. And then the hashrate of the Bitcoin blockchain will wane and can be attacked by the cartel.
Yeah a cartel side chain is great sell out to TPTB. Go! Good job!
Blockstream is (unwittingly?) enabling an easy path for the cartel to fork Bitcoin.
I don't think it was clear to readers that the reason the red bolded sentence is particularly worrisome for Bitcoin is because those who remain in the decentralized fork have to fear a declining hashrate and 50% attack.
Side chains are a natural feature that will be added to any crypto-coin in the future, thus the design of crypto-coins has to eliminate the 50% attack.
Again I propose doing that by reducing the power of the consensus center, i.e. applying Tim Berner-Lee's
Principle of Least Power.