Blancq is a product of the Argentinos Juniors youth system, having previously progressed through local team CSyD Victoria and Boca Juniors.[1][3] In January 2020, Blancq completed a loan move to Venezuela with GV Maracay.[1] He made his professional debut for the newly promoted Primera División outfit on 8 February, coming off the bench during a goalless draw against Yaracuyanos at the Estadio Florentino Oropeza.[1][4] His first start arrived on 22 February versus Metropolitanos, while the winger scored his first senior goal in a 6–2 defeat to Caracas on 23 November.[1][5]