Ontology deposit live on Koinex.. Trade starting sooner as per Koinex news

Venezuela has offered India a 30 per cent discount on crude oil purchases. The discount, however, will be applicable only if India uses the country’s new blockchain technology-based currency Petro.

Recent days block chain and crypto currency like bitcoin more popular . how do they work , what problems it solve and how they can be used . Block Chain Block chain is a chain of blocks contains information