2011/11/23, Andy Parkins <andypark...@gmail.com>: > On 2011 November 23 Wednesday, Jorge Timón wrote: >> With the current system, the timestamp can also be cheated, but miners >> have no direct incentive to do it. With your system, they increase >> their probability of mining a block by putting a false timestamp. >> Also, where's the network clock you're talking about? Isn't it the >> timestamps in the blockchain? > > (1) The "probability of mining a block" is old-think. The probability of > mining a block is 100% in my system. Instead, it becomes "the probability > of > your block being the hardest" and that requires actual hashing power > regardless of the timestamp you write on the block. I could write that my > block was generated next year; but I can't fake the hashing power it needs > to > generate one year's worth of hashes.
Well, I meant "the probability of your block being the hardest". What a miner can do is hash the block (cheating the timestamp) for 2 more minutes than the rest of the people and then send it to the other nodes. Nodes cannot possibly know when did you hashed the block only by looking at their clock when they receive it, because there's also network latency. > (2) For the network clock; see util.cpp:GetAdjustedTime(). 1) This is part of the satoshi client but not the protocol. A miner can rewrite this part of the code and there won't be anything in the chain that contradicts the protocol. 2) I haven't read the code but I'm pretty sure that's not a perfect decentralized clock. I will be more specific. Where's the network clock in the chain (in the protocol)? -- Jorge Timón ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
