Blackbird Labs has raised $50 million for its blockchain-based payment-loyalty app for restaurants.
The company plans to launch a cross-restaurant 'points' service called Blackbird Club and expand into new markets.
Leading the funding round is Spark Capital, with participation from Coinbase Ventures, Amex Ventures, and Andreessen Horowitz.
Blackbird's Flynet payment service utilizes blockchain technology and aims to improve the profitability of restaurants by reducing payment processing fees.