Microsoft has launched an early preview of a Sidetree-based DID network, called ION (Identity Overlay Network) which runs atop the Bitcoin blockchain based on an emerging set of open standards.It has been developing the solution with many its partners in the Decentralized Identity Foundation, the firm said on its blog site."We believe every person needs a decentralized, digital identity they own and control, backed by self-owned identifiers that enable secure, privacy preserving interactions. This self-owned identity must seamlessly integrate into their lives and put them at the center of everything they do in the digital world.""This self-owned identity must seamlessly integrate into their lives and put them at the center of everything they do in the digital world."We've been hard at work contributing to numerous emerging standards and developing open source components in furtherance of that vision, Identity Hubsbeing our most recent contribution. Identity Hubs provide secure, encrypted storage of personal data and they rely on decentralized systems (blockchains and distributed ledgers) to anchor their identifiers. Unfortunately, those systems have not had the performance characteristics required to power a truly worldwide decentralized identity system".