If you are interested in improving Bitcoin, and making about a Euro (4.2 mBTC) in return, read on... We are researchers conducting a Bitcoin user study and are seeking participants. Bitcoin users are kindly invited to participate. Our survey is anonymous and takes under 10 minutes to complete. As a reward you receive BTC. The goal of this survey is to learn about user perceptions regarding Bitcoin and will cover aspects such as key management, wallet usage and risk perception. As we believe that these results will be valuable to the entire community, we will publish our results and make them available to everyone. This is the link to the survey: https://www.soscisurvey.de/BTC_study/?r=932181 SBA Research SBA Research was founded in 2006 as the first Austrian research center for information security by the TU Wien, the Graz University of Technology and the University of Vienna. Funded largely by the national initiative for COMET. Along with many other international academic and business research partners we jointly work on challenges ranging from organizational to technical security. We are 100 strong. https://www.sba-research.org/ SoSci Survey SoSci Survey can help you carry out your professional online survey: create online questionnaire, send invitations (including follow-ups), Data download (SPSS, GNU R, Excel). It was designed specifically for scientific surveys and is continuously developed for daily research practice. The software supports a project manager and allows flexibility in the design of questionnaires. The most demanding and complex designs can be realized. https://www.soscisurvey.de/