World Network, originally Worldcoin, is a for-profit cryptocurrency project that uses iris biometrics developed by San Francisco- and Berlin-based Tools for Humanity. Founded in 2019 by OpenAI chief executive Sam Altman, Max Novendstern, and Alex Blania, it has accumulated $250 million in funding from venture capital firms Andreessen Horowitz and Khosla Ventures, as well as from Reid Hoffman.