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Versions of "Credibility Signals":

• 2017 - Based on just CredCo indicators ("cciv")
• 2018 - First google-doc crowdsource version
• 2019 - Last google-doc crowdsource version
• 2020 - Known Signals (From 2019 + NewsQ + TBD)
• 2020 - Reviewed Signals: Public Review Draft