What differentiates Bitcoin from gold? Both are good monies. Obvious answer is BTC is more divisible and portable. A more in-depth answer is BTC cannot be counterfeited, and in worst case, laymen wait on the spot for up to an hour (~6 blocks) to confirm receipt. For gold, if someone give me a gold coated iron, it will some tools to cut it, some experiment to test it. In short, laymen can’t wait on the spot, but to verify it somehow. Most important answer is the difficulty adjustment in BTC, which controls its constant supply even with most advanced tools/computers. In theory, gold also has a fixed supply, just that it is not 100% known yet. It is arguably at least on par with BTC, both having fixed supply. Both are backed by proof of work( BTC by energy and ASIC manufacture, gold by mining machinery and labour). The key differentiator is the programmed difficulty adjustment. Assuming one day, technical advancement enables gold miners to extract gold reserves at a much faster pace, gold can in theory flood the market and crash its prices. There can be coordination among miners like OPEC, but this is centralised and man-made efforts, not comparable to the difficulty adjustment built-in in Bitcoin. Bitcoin is the best money, most decentralised with fixed and most importantly, a foreseeable, supply that everyone can check.