Group 1 - 30 former NFL star players from various teams will participate in autographing up to 3,000 memorabilia items [1] - Memorabilia items include helmets, footballs, and jerseys, which will be autographed on-site [1] - The event will feature live autographs facilitated by Notable Live [1] Group 2 - Autographed memorabilia will be supported by Prova & Sumerian technologies [1] - Digital twins of the memorabilia will be tokenized using Data Vault [1]