# Pastebin BChX6gR9
def decoy_selection_validation(ring_member_ages_days, age_threshold_days):
    min_age = min(ring_member_ages_days)
    ring_member_ages_shifted = [x - min_age for x in ring_member_ages_days]
    med_rel_age = np.median(ring_member_ages_shifted) # This allows delayed broadcast :- )
    
    print('Raw ring member ages:')
    print(ring_member_ages_days)
    print('\nOffset removed: (to allow delayed broadcast)')
    print(ring_member_ages_shifted)
    print('\nMedian relative age')
    print(med_rel_age)
    
    if med_rel_age <= age_threshold_days:
        print('\nTransaction may have used the correct decoy selection algorithm')
        valid_txn = 1
    
    if med_rel_age > age_threshold_days:
        print('\n'+50*'#'+'\nThis transaction was NOT generated with the correct decoy selection algorithm')
        valid_txn = 0
        
    return valid_txn