On Mon, Apr 29, 2013 at 03:48:18AM +0000, John Dillon wrote: > We can build this stuff incrementally I'll agree. It won't be the case that > one > in a thousand nodes serve up the part of the chain you need overnight. So many > I am over engineering the solution with BitTorrent.
I think that pretty much sums it up. With the block-range served in the anounce message you just need to find an annoucement with the right range, and at worst connect to a few more node to get what you need. It will be a long time before the bandwidth used for finding a node with the part of the chain that you need is a significant fraction of the load required for downloading the data itself. Remember that BitTorrent's DHT is a system giving you access to tens of petabytes worth of data. The Bitcoin blockchain on the other hand simply can't grow more than 57GiB per year. It's a cute idea though. Also, while we're talking about the initial download: http://blockchainbymail.com Lots of options out there. -- 'peter'[:-1]@petertodd.org
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