PANews, June 21 news, according to official news, Gate will launch spot trading for STO Chain (STOC) on June 30 at 15:00 (UTC+8). The STOC HODLer Airdrop event will soon begin, ending on June 30 at 11:00 (UTC+8). Holders of 1 GT can claim the airdrop for free, sharing 492,611 STOC, with a personal participation limit of 2,000 GT.