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Energy consumption Blockchain is HUGELY energy intensive (it was estimated that Bitcoin's annual carbon emission is 20-22 Million Tonnes - which, if it were a nation would equal carbon emissions of Sri Lanka). Based on Moore's law, due to the increase of processing power, modern day cryptographic algorithms have to keep adding more bits to their moduli in ...


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Blockchain is only "secure" and "difficult to hack" when it's distributed over a lot of systems. The "truth" in a blockchain system is the truth most of the systems which calculate the blockchain agree on. So if you want to manipulate a blockchain, you need to hack over 50% of the systems to have the whole system assume a new truth and hack 100% to destroy ...


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Blockchain tech is about maintaining integrity across a distributed system, which is why it's used for decentralised transaction processing. Every node in the system has to agree on the history and what the definitive version of the blockchain is, which can be a pretty laborious task - one of the reasons Bitcoin's network has trouble processing the kind of ...


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In practice, the reason they don't use blockchain is the same reason they don't use vacuum tubes. By the time you're thinking in terms of military spaceships, blockchain will be some forgotten old reference only of interest to those studying the history of computing. Be very careful putting fine detail on the cutting edge of present technology in a future ...


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Blockchains only make sense when you need to ensure the integrity of, well, a chain. In the most general case, the way a blockchain works is that each block contains a data payload, and a verification hash, which is a fixed-size summary of The payload of this block, and The entirety of the preceding block. Because the hash of the preceding block was based ...


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Well, as a programmer, I can easily give you two reasons. First, it would be extremely difficult to modify data in the log. Say your hypothetical "Cpt. Kirk" gets pissed at the science officer (let's call him "Spock") while inebriated. He then puts an extremely ill-thought-out entry in our hypothetical log, saying some... ah... unprintable things about "...


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What evidence do you have that they do not? If blockchain protection becomes the standard way to protect and insure important documents and everybody has access to it and uses it as a matter of course, then it just wouldn't be mentioned by narrator or character. Just as you would usually not say that someone wrote "with a ballpoint pen", or wore "leather ...


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It depends on how the shrinking works and if you stay connected to your extradimensional mass. 1) The drug kills all of your cells but a few thousand, so you are flea-sized As Fred already said, you will almost instantly die from undertemperature (your body mass is divided by roughly 50 million, but your skin surface is only divided by about 500,000 so you ...


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I would start writing a message on the floor using grains of sand and dirt lying around. But realistically you would just very quickly end up freezing to death because of the square cube law.


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