We recently released an open-source Clojure implementation of Roughtime, a protocol for secure time synchronization with cryptographic proof.
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精准打造农民与产业利益联结机制——
Many plastics contain thousands of chemical additives, including dyes and flame retardants. Some of these substances are toxic or linked to cancer. The Organisation for Economic Co-operation and Development (OECD) has warned that without coordinated international action, plastic production could increase by 70% between 2020 and 2040, surpassing 700 million tonnes annually.