Numerai's decentralized Erasure marketplace has publicly launched, targeting hedge funds with its stock market predictions. : Hedge fund Numerai has taken another step in decentralizing its crypto-based data gathering and stock price prediction platform with the public launch of its Erasure marketplace. Announced Thursday, the platform – which lets data scientists earn or lose tokens by staking them on stock market price predictions – is now looking to attract hedge funds worldwide by allowing any firm to buy a prediction. Built on the ethereum blockchain, the Erasure protocol  works by allowing members to essentially bet on their predictions.