Introduction to cryptocurrencies What is a cryptocurrency? A cryptocurrency is a digital currency based on a decentralized exchange network. Cryptocurrencies rely on cryptographic techniques that guarantee the security of transactions. Most cryptocurrencies are based on a blockchain, a technology that allows a decentralized network to approve and record transactions. A blockchain is a database that contains the history…

A technological revolution that disrupts established models First of all, let’s go back to what blockchain is. It is a protocol that allows to validate and record transactions. Each transaction is validated thanks to a consensus principle: all the nodes (validators) of a network (a blockchain) agree to validate a transaction and guarantee that it is unfalsifiable…

Humanity must now face the climate emergency The planet is suffering from human activity. In recent years, we have seen the consequences: the depletion of its resources and abrupt changes in our environment. According to the conclusions of the first working group (WGI) of the 6th IPCC report, a rise in temperature of 2°C and more in…

We are proud at Obvious21 to launch in the coming weeks our banking application and currently to issue the O21 cryptocurrency. …

States cannot solve the climate problem with our classic currencies and the implementation of political decisions is far too slow compared to the urgency of the situation. The IPCC report alarmed everyone. The “+ 2.7 ° in 2100 are dramatic”, evoked in a tweet of September 20, 2021 by Emmanuel…

Les Etats ne peuvent pas résoudre le problème climatique avec nos monnaies classiques et l’application des décisions politique est bien trop lente par rapport à l’urgence de la situation. Le rapport du GIEC a alarmé tout le monde. …