Mitsui & Co. Digital Commodities, a subsidiary of Japan's Mitsui & Co., plans to deploy its tokenized precious metal asset, Zipangcoin (ZPG), on Optimism's OP Mainnet. This marks the first time ZPG will enter a public blockchain ecosystem since its launch in 2022. Backed by gold, silver, and platinum, ZPG is issued under Japan's regulatory framework and will soon be available for trading on the Japanese exchange GMO Coin.