I starting following this blockchain meets WordPress story back in July when WordProof received €1,000,000 from the European Commission. Yesterday Yoast took an undisclosed stake in WordProof which makes a lot of sense given the content focused nature of the company, Emily Schiola for Torque, Yoast Takes Stake in WordProof: “WordProof is aimed at giving consumers a way to validate information using the Timestamp Ecosystem. This gives readers and search engines a way to quickly find sources for content.”