7. Certify a supply chain Many consumers would prefer to make ethical choices about the products they buy. Recent scandals such as the sale of horse meat as beef in the UK, and revelations about the poor conditions of garment workers in developing countries has pushed this issue into the headlines. However, proving the origin of every component in a product can be impossible, and even if this information is held by a centralised authority, it may not be trustworthy. London startup Provenance offer decentralised supply chain certification. Read the white paper here.