Object lifecycle · Measured endpoints

1dir and 8dir objects persist with stable public URLs.
map-objects job records are documented to auto-delete after 8 hours. The image survives: a March 2026 sprite still resolved from /v2/objects four months on while /v2/map-objects/{id} returned 404. pixelkiln's poll checks the objects collection on a 404 rather than writing the work off.
pixflux/pixen/bitforge results are not account objects at all. Bytes come back inline and are never listed. adopt and salvage cannot see them, and they cannot be tagged.
Character rotation and frame URLs live at a stable path under backblaze.pixellab.ai/file/pixellab-characters/... but carry ?t=<updated_at as epoch seconds>, and the response is cache-control: public, max-age=31536000. The path serves the current bytes with any t (checked September 2026), but a cache between you and the bucket may not, so fetch --refresh reads GET /characters/{id} for the current stamp before comparing. Object URLs carry no stamp.