“Blockchains are secure, transparent and efficient. They record transactions as ‘blocks’ on a synchronized and distributive ledger — each one has to be ratified by more than one party, and is tied to the previous block. This means that supply chains involving more than one transaction can be traced along their entire sequence. If they are integrated with smart contracts, they could cut out middlemen. The most well-known manifestation of the blockchain is cryptocurrencies like Bitcoin; however, as it is a transaction system, it can be used for far more than currencies…”
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https://futurism.com/blockchain-could-help-save-environment-heres-how/