Minimum Viable Block Chain
Excellent read. This is not for a general audience, but helped me get a nicer grasp on the fundamentals technology than I had before without getting too particular in the under the hood stuff.<p>The "blocks are never final" idea is what I believe has led to some of the proposed 51% attacks on the bitcoin network.<p>Question: Does proof of work have to be a near 'lottery' system? Obviously it needs to be asymmetric, but are there other good options than hash collision?