Tools For Humanity, main developer of Worldcoin, the crypto project co-created by OpenAI's Sam Altman, has acquired Solana-based digital wallet startup Ottr Finance, the two companies announced in a statement.

It appears the acquisition is, at least partly, geared towards aiding Worldcoin as it onboards new users, many of whom are new to web3. Worldcoin is a "proof of personhood" project which uses orb-shaped devices to scan a person's irises and establish they're a unique human before giving them crypto tokens for doing so. While the project has faced some scrutiny related to privacy concerns, it has signed up nearly 3.9 million people, according to Worldcoin's website.

Along with the millions of people signed up, Worldcoin has users in 120 countries since launching 220 days ago, …