Block operates several popular fintech services, including the consumer-focused Cash App and seller-focused Square. The US-headquartered global fintech giant Block has opened a new office in Dublin, positioning the location as a strategic European hub for the company. Block operates several popular fintech services, including the consumer-focused Cash App and seller-focused Square. The strategic location allows the company to create a dedicated space for collaboration and seller engagement, Block has said. The company did so to differentiate its corporate entity from its Square Seller brand.