The Bitcoin Strikes Back
smitty777 writes "Slashdot readers are no doubt informed of the infamous crash of Bitcoin. In fact, its demise was followed closely here. Wired has a recent article tracking Bitcoin's climb out of chaos. Valued at $17 before the crash, it had lost 90% of its value due to the hacking incident, down to a low of $2. It climbed back up to $3 in December, and is currently valued at $4. From the article: 'Bitcoin boosters have traditionally suggested that Bitcoin is an alternative to [the world's] currencies. But we'll suggest an alternative explanation: that Bitcoin is not so much an alternative currency as a "metacurrency" that allows low-cost and regulation-free transfer of wealth between nations. In other words, Bitcoin's major competitors aren't national currencies, but wire-transfer services like Western Union.' Still, Bitcoin has significant obstacles to overcome, such as covert mining, criminal uses, and other security issues."
Amir Taaki of the Bitcoin Consultancy (who did an interview here a while back) disputes the reasoning and the conclusions in the Wired article.
Regular money has criminal uses. The security concerns are also a non-issue as regular wallets and bank accounts are routinely stolen and money diverted.
Miners dont make the network;
Actually, it is the miners that literally make the network.
Bitcoin is the most traceable "currency" in the world. It's just that bitcoin accounts don't have names attached, making them less tracable than bank account transfers, credit cards, etc., but certainly you can trace them, and ask the first legit possessor how they obtained them.
There should probably be an anti-fraud protocol that attempts to trace the paths of fraudulently transferred bitcoins. You could establish "super" civil rights protections around it that complied with the tightest civil liberties rules in various countries, much like wikileaks did for journalism, but ultimately provided a sensible framework for ex-post-facto dispute resolution.
The Christian religion has been and still is the principal enemy of moral progress in the world. -- Bertrand Russell
Bitcoin transactions are very traceable and there is no indirection or anonymization built into the software. The GP doesn't know what he is talking about.
For instance, a break through in prime factorization (or however bitcoins are created) that is kept secret could mean that someone generates a ton of money out of thin air, which are impossible to identify apart from normal bitcoins (as they would be legitimate bitcoins).
They're created through brute forcing SHA256 hashes to meet a specific criteria. As the global hashrate rises, a difficulty factor is automatically adjusted to keep generation constant at 300 per hour.
If you invent an inexpensive piece of hardware that can push several orders of magnitude more SHA256 hashes per joule, you will successfully capture a disproportionate percentage of those 300 coins per hour. You do not get to generate unlimited coins - you just asymptotically approach 300/hour.
In fact, this has already happened: hashing used to be done on CPUs at about 10-20 MHash/s per core; then the RadeonHD happened. Suddenly some people had access to hundreds / thousands of "cores" (they're vector processors, practically miniature Crays for $200 a pop for this problem), pushing 500-1000 MH/s per GPU. Hashrate surged by orders of magnitude as people bought 58xx and 59xx cards as fast as they could make them, and difficulty rose in lockstep. End result: CPUs are now irrelevant and Radeons are marginally profitable if you have cheap power. It wasn't a problem.
It's also easy to switch to a new proof-of-work if someone completely breaks SHA256.
There are some significant weaknesses in Bitcoin, but this isn't one of them.