Block Quote: 851554

'Long before the network gets anywhere near as large as that, it would be safe for users to use Simplified Payment Verification (section 8) to check for double spending, which only requires having the chain of block headers, or about 12KB per day.' November 2, 2008 - Satoshi Nakamoto 

 Tell me more. Conte-me mais. 

 Conte-me mais sobre...