After a year and a half of hard work, we recently released TIN Validate (tin-validate.com), a Tax Identification Number (TIN) validator available through both a web portal and a REST API. Over the past few years, we have seen a significant increase in regulations aimed at strengthening tax compliance and the automatic exchange of tax information. In Europe for example, the DAC7 directive now requires collaborative platforms such as Airbnb and Booking.com to report users' income along with tax information. Financial institutions are also already required to perform international tax reporting…