As interest in cryptocurrencies spikes, so does the debate on whether they comply with Sharia principles, which do not allow conventional financial practices like paying interests or trading speculative financial products. Blockchain startup Onegram is seeking to lure Islamic investors into cryptocurrencies through its gold-back Onegram coin (OGC), which it says is Sharia-compliant. Ong Kai MIn, CEO of the Singapore Index Trading Institute, demystifies asset-backed cryptocurrencies.