Most of bitcoiner believe we can't split blockchain and bitcoin, without bitcoin, blockchain will no safe and it will useless. It's the bitcoin secure the blockchain.
if this point is right. then i got a question, compare pow blockchain, i think pos blockchain may be more secure than pow blockchain. such as NXT blockchain VS bitcoin blockchain.
And why we can sure bitcoin's blockchain is the most value-full?
I mean we need find a security blockchain, bitcoin's blockchain may not be the best choice.
Bitcoin was the beginning of an experiment that has caught fire and spread wildly. There are now hundreds of stable blockchains.
Once 51% defense systems (like the one we invented) become commonplace, and cheap hashrate becomes plentiful, the price and energy required to keep a blockchain secure will become negligible.
All blockchains are extremely weak compared to Bitcoin's. Bitcoin's blockchain has an army of the equivalent of 77000 units of the faster supercomputer in the world, in other words is secured by the strongest network on the planet. That's why NASDAQ and the rest of big infrastructures will work with the Bitcoin blockchain and will not waste resources trying to make their own blockchain, or use an altcoin which means several orders of magnitude less secure.
Until the two biggest pools team up and decide to attack the block chain. The network would be much safer if there were no giant pools that could potentially be abused.
Like 2 or more of the 4 leading pools, all of which are Chinese? https://blockchain.info/pools
And wasn't the farms of both BW and Antpool at the same location? https://bitcointalksearch.org/topic/--969823
And isn't it true that they will benefit more by using their hashrate to get most of the blocks, rather than attacking the blockchain?
If they attack it they could gain a shit ton of coins without having to spend years to get it.
If they attack it, everyone else will detect it and possible modifications to the protocol will be made.
Also, don't all nodes need to agree on a found block?