id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
blog-dshr-org-4465		DSHR's Blog: Blockchain briefing for DoD			.html	text/html	14135	1100	72	Thus one essential part of your system is one or more exchanges, at which the miners can sell their cryptocurrency rewards for the "fiat currency" they need to pay their bills. Over time, permissionless blockchains require an inflow of speculative funds at an average rate greater than the current rate of mining rewards if the "price" is not to collapse. In practice the security of a blockchain depends not merely on the security of the protocol itself, but on the security of both the core software, and the wallets and exchanges used to store and trade its cryptocurrency. If you trust a central authority to update your software automatically, or if you don't but you think others do, what is the point of a permissionless blockchain? "Malicious cryptocurrency miners took control of Bitcoin BTC Gold's blockchain recently to double-spend $72,000 worth of BTG.	./cache/blog-dshr-org-4465.html	./txt/blog-dshr-org-4465.txt