RT: Had a chance to beta test @digicardkey new app, which allows you to trace / prove ownership of your collectibles on the blockchain. Cool technology that can show how ownership moves on cards over time. https://t.co/2sghuPdBzS
RT：有机会对 @digicardkey 新应用进行 beta 测试，它允许您在区块链上追踪/证明您的收藏品的所有权。很酷的技术，可以显示所有权如何随着时间的推移在卡片上移动。 https://t.co/2sghuPdBzS