Blockchain News Mexican medical firm embraces blockchain for covid test certificates October 18, 2021 MDS Mexico will use blockchain technology to verify the authenticity of its rapid coronavirus test results. About The Author coinmaker See author's posts Post navigation Previous: ‘Big Short’ Investor Michael Burry Not Shorting Bitcoin, Warns ‘Cryptocurrencies Are in a Bubble’Next: Retro NFT packs drive frenzied Top Shot speculation More Stories Blockchain News L1s face decentralization ‘tug-of-war’ as adoption grows: Injective CEO July 6, 2026 Blockchain News Moonbeam to pivot from Polkadot to Base, unveils AI agent framework July 4, 2026 Blockchain News Upbit says it only expressed interest in future OUSD participation July 3, 2026