This talk provides an overview of my work on financial technologies, with an emphasis on how people perceive, use, and understand them. It outlines research described at flagship ACM Human-Computer Interaction conferences such as CHI and DIS focusing on how people develop or fail to develop trust in blockchain technology. The talk focuses on rich empirical work within my research group targeting three types of stakeholders: users of bitcoins, miners, and experts. It also outlines the design and evaluation of BlocKit, a physical kit for communicating about the blockchain infrastructure, and in particular how trust can be better materialized and designed for. The talk articulates the value of this body of work towards novel design implications for trustworthy blockchain technology. Most of the research described in the talk has been supported by the Digital Threads, an UKRI-funded project.