bitcoin charts reveals that the cryptocurrency has been on a steady decline for the past few months, following its continuous tumble last year. Website blog whitepaper roadmap, documentation github stackExchange. On the one hand nobody would lend anybody bitcoin at an interest rate that can be recouped through innovation and on the other hand if it is more profitable to simply trade bitcoin every day then why would you ever continue that research on cancer. Even if the blocksize is increased and the blockchain reduced in size dramatically, given the current energy usage of the Bitcoin blockchain, this would still mean an enormous increase of energy usage versus the current infrastructure. Hacking attacks demanding bitcoin as ransom have continued to put a negative light on the digital currencys usage as well. If the US Dollar (just picking one) were a deflationary currency (like bitcoin, rising in value every day people would fight to not spend any of their Dollars. Bitcoin growth in terms of its value against fiat has decreased over the last year.
We use fiat currencies to be able to easily exchange whatever we manage to contribute to society with what other people contribute. So further innovation is necessary (which is unlikely to happen once bitcoin just rises by 10k USD every day why work then?). Apart from that, the crackdown of authorities on criminal usage of bitcoin has weighed on the cryptocurrencys value, as this led to caution among startups and individuals. Yet I believe this currently still would imply a totally unsustainable amount of energy if fiat were to move to the current blockchain. To answer your question more ditectly. A world currency system obviously needs to be able to scale. The blockchain would also need to be able to provide instantaneous transactions, something that currently is far from the truth.
Geld in bitcoins anlegen, Wo bewahre ich bitcoins auf,