Re: Replacing Bitcoin with something less wasteful (split from Is deepbit.com stealing coins?)

By default, the Bitcoin client accepts whichever chain is the longest as the "correct" blockchain.

Again: How would you create a public ledger that is unchangeable, yet decentralized?

Why, a blockchain based on cryptography, Mr. Bitcoin, of course. There's no other answer, nor could there possibly ever be one.

Now that I've given the correct answer to your straw question, you tell me why having the required computing power needed to maintain that blockchain must be an artificially rigged game that is completely open-ended with respect to required capacity?

Keep it short, I'll be interviewing someone else shortly. Thanks for your time, I sometimes find it amusing to be patronized by inferior people.

1) Who maintains the blockchain based on cryptography? If it is decentralized, what criteria would clients use to determine whether the blockchain is legitimate or not? Obviously, anyone could create their own blockchain, then broadcast it in an attempt to "rewrite" history. If the amount of computational power it takes to write a blockchain is artificially limited, then it can easily be overwritten by anyone with computing power greater than the artificial limit.
2) The computing power is necessary to prevent someone from having an equal or greater amount of computing power.
3) Inferior people? If you really are as old as you say you are, learn some respect. It makes you look pretty childish when you throw out insults like that.