Bit geeky this one…
Been taking a look at cryptocurrencies and have been reading up about how Ethereum (a bit like Bitcoin, but with extra sauce) can have it’s blockchain functionality used by other applications. Seems one company is trying to improve on paper gold investments using the service by having gold investments that are backed up by real physical gold using Ethereum’s blockchain as a proof mechanism so that gold isn’t double sold I guess - https://digix.global/