Poland has built one of the most successful domestic instant payment systems in Europe — and Blik is the consumer-facing product that made it a daily habit for millions of Poles. Founded in Warsaw in 2015 as a joint initiative of Poland's major banks, Blik is a mobile payment standard that generates a six-digit code valid for two minutes, which can be used to pay in stores, online, or at ATMs without a physical card. The simplicity of the interaction — open your banking app, get a code, pay — drove adoption faster than almost any payment product in European history. Blik now processes hundreds of millions of transactions annually and has become the default payment method for a generation of Polish consumers who have grown up treating it as unremarkable. The system's success reflects what happens when competing banks agree on shared infrastructure rather than building incompatible proprietary solutions — a lesson that has taken the rest of Europe considerably longer to absorb. Blik has begun expanding beyond Poland, with pilots in Romania and interest from other Central and Eastern European markets, raising the question of whether a nationally successful payment standard can translate into a pan-European one.