ONOSENDAI is an open-source web-based client that enables you to interact with cyberspace via your nostr identity.

Cyberspace is a permissionless decentralized metaverse where all actions require proof-of-work.

Read the cyberspace specification here: https://github.com/arkin0x/cyberspace

Read about the history of cyberspace and "the metaverse" here: https://habla.news/u/[email protected]/LgILfOouzSU_hO3EnuUk4