There is a certain champion thoroughbred who just turned 35 today, the key to the cipher is their name. make sure to add the ictf flag formatter before submitting
dwj_wn_qph_joe_ezj_i_t1_zpvsi_gyeoewvg
They say you shouldn't rely on frontend validation, but without a backend this will have to do.
https://ictf-validation.iciaran.workers.dev/
Welcome to a very belated round 62
ictf{10_day_round_lmao}