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Each block must incorporate the hash from the previous block.
by jsprogrammer 11y ago
Each block must incorporate the hash from the previous block.
- the_mitsuhiko 11y agoSo what stops you from mining ahead secretly?
- colejohnson66 11y agoMy guess is the difficulty of making a block means it would take too long
- jsprogrammer 11y agoAs colejohnson said, the difficulty. The network, as a whole, expects to generate 1 block approximately every 10 minutes. Someone with less than 50% of the network power will never be able to sustainably mint a longer chain of 'fake' blocks before someone else mints a legit one.
- the_mitsuhiko 11y ago> As colejohnson said, the difficulty. The network, as a whole, expects to generate 1 block approximately every 10 minutes. Someone with less than 50% of the network power will never be able to sustainably mint a longer chain of 'fake' blocks before someone else mints a legit one. If you look at the blocks mined you can see that there are plenty of mining groups that manage to mine consecutive blocks: https://blockchain.info/blocks https://blockchain.info/blocks
- jsprogrammer 11y agoMining a few consecutive blocks isn't enough. All it itakes is one known block to cancel all the witheld blocks. Additionally, the attacks you can perform by extending a known chain a few more 'fake' blocks are minimal.