Crate 0.8.0 is the canonical minimum for USDC
OpenUSD v25.05 sets the minimum crate version and default version for new USDC files to 0.8.0, to increase compatibility with older versions of OpenUSD. Documents will automatically upgrade to newer Crate versions upon saving when using features introduced after 0.8.0, such as animation splines and path expressions..
This decision also addresses feedback from OpenUSD v25.02, which had defaulted new Crate files to 0.10.0, resulting in content incompatibilities even for documents that were not using newer features.
Support for versions of Crate prior to 0.8 are being deprecated, and it is recommended to update any older assets prior to the removal in future versions of OpenUSD. usdcat can be used to re-export crate files to automatically version them up.