City authorities partnered with Poseidon Foundation startup to develop an eco-solution, using the blockchain technology to help fight global warming. Poseidon Foundation will use Stellar blockchain to help smaller corporations and cities have access to the “carbon credits”. One of the tools to be used is an app that will show and track the amount of carbon substances the resident created into the atmosphere when buying, for example, a pair of shoes. If the buyer is concerned about the environment, s/he can switch on a function that automatically allows to write off funds from his account in the framework of a “carbon credit”.