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Not quite. Bitcoin has very specific rules that transactions must follow. For example, there is a very strict way that you can create new money. Existing money
by Taek 10y ago
Not quite. Bitcoin has very specific rules that transactions must follow. For example, there is a very strict way that you can create new money. Existing money can only be spent by the owner, etc.
So, if the longest chain violates one of the core rules, that chain is ignored. You only ever follow the longest chain that also follows all of the rules.
- runeks 10y agoIt's not the longest chain (most blocks) that is preferred, it's the chain with the most cumulative work. Ie. the valid chain whose sum of block difficulties is the greatest.