hyperuuid

https://github.com/SkunkWerkx/HyperUuid

RFC 9562 UUID v4 (random), v5 (deterministic), v6 and v7 (time-sortable) generation, with batch and raw-bytes forms, from one native Rust core. Three backends behind one surface, selected automatically and all shipped prebuilt: a Magnus extension where a precompiled platform gem matches, stdlib Fiddle everywhere else, and the same core as a WebAssembly module for anyone who installs the wasmtime gem. No runtime bridge, no dependencies beyond Fiddle.