{"rid":"storage/blossom-blob-servers","card":{"rid":"storage/blossom-blob-servers","eid":"nostr","topic":"storage","slug":"blossom-blob-servers","provider":"Blossom blob servers (nostr.download, blossom.nostr.build, 24242.io)","url":"https://blossom.nostr.build/","domain":"nostr.build","category":"Nostr media/blob servers (content-addressed, keypair auth)","tier":null,"verdict":"fails-quota","vorder":6,"grp":"rejected","confidence":"reported","binding":"retention-clamped","identity_kind":"anonymous","identity_basis":"stated","needs_card":0,"needs_phone":0,"needs_id":0,"needs_institution":0,"country":null,"crypto":null,"interfaces":"rest","egress_metered":0,"per_object_bytes":null,"retention_days":60,"verified_at":"2026-10-21T00:00:00.000Z","verified_basis":"inherited","checked_on":"2026-10-21","stale_on":"2026-11-04","n_evidence":5,"usd_month":null,"usd_per_tb_month":null,"summary":"Per-object caps only, and small: nostr.build free uploads 20 MiB, hard cap 100 MiB, then storage plans 5 GB / $18/yr up to 500 GB / $240/yr. 24242.io: 100 Mi...","duplicate_of":null,"n_unknown":5},"record":{"topic":"storage","slug":"blossom-blob-servers","provider":"Blossom blob servers (nostr.download, blossom.nostr.build, 24242.io)","url":"https://blossom.nostr.build/","category":"Nostr media/blob servers (content-addressed, keypair auth)","free_tier":{"stated":"Per-object caps only, and small: nostr.build free uploads 20 MiB, hard cap 100 MiB, then storage plans 5 GB / $18/yr up to 500 GB / $240/yr. 24242.io: 100 MiB max file, files deleted after 60 days unaccessed. blossom.psbt.me: 1 month hosting, files under 1 MB.","unit":"GB","metered_on":"stored-bytes","source_url":"https://blossom.nostr.build/","read_on":"2026-10-21","notes":null},"per_object_cap":{"stated":"not stated","source_url":"https://blossom.nostr.build/","notes":"not stated"},"retention":{"stated":"24242.io: 100 MiB max file, files deleted after 60 days unaccessed","days":60,"source_url":"https://blossom.nostr.build/","notes":"not stated"},"egress":{"terms":"Free CDN, global.","metered":false},"interface":["rest"],"interface_detail":"BUD-01/BUD-06 HTTP API: PUT /upload, HEAD /upload, DELETE; auth is a signed Nostr event in the Authorization header, not an account.","tooling":"any Blossom client; curl with a signed event.","chaining":"Content-addressed by sha256, so it chunks naturally into the hoangvu12/free-s3 pattern — but 20 MiB chunks would need ~50,000 objects per TiB.","limits":[{"kind":"retention-clamped","value":"deleted after 60 days","source":"https://blossom.nostr.build/"}],"limits_note":"20 MiB free / 100 MiB absolute on nostr.build; 100 MiB on 24242.io; 1 MB on psbt.me. Auth is a signed event, so 'no account' is real: 401 with x-reason 'Missing Blossom Authorization header'.","identity_cost":{"kind":"anonymous","detail":"anonymous","country":null},"reliability_note":"Pure per-object-cap failure. Included because the auth model (keypair, zero registration) is the most open I found anywhere, and because the 60-day idle deletion on 24242.io is a textbook retention-clamp.","confidence":"reported","confidence_note":"One page read moves it to documented.","evidence":[{"url":"https://blossom.nostr.build/","date":"2026-10-21","proved":"'A hard cap of 100 MiB per upload (20 MiB for free uploads), with no limit on the number of uploads or retention'; plans $18/yr 5GB … $240/yr 500GB"},{"url":"https://blossom.nostr.build/upload","date":"2026-10-21","proved":"HEAD returns 401, x-reason: 'Missing Blossom Authorization header, authorization required' (i.e. keypair auth, no signup)"},{"url":"https://nostr.download/upload","date":"2026-10-21","proved":"401, x-reason: 'Auth header not found'"},{"url":"https://24242.io/","date":"2026-10-21","proved":"'Max file size: 100MiB. Files are deleted if not accessed for 60 days.'"},{"url":"https://blossom.psbt.me/","date":"2026-10-21","proved":"'Free Tier: 1-month hosting for files under 1 MB'"}],"verdict":"fails-quota","verified_at":"2026-10-21T00:00:00.000Z","notes":"Per-object caps only, and small: nostr.build free uploads 20 MiB, hard cap 100 MiB, then storage plans 5 GB / $18/yr up to 500 GB / $240/yr. 24242.io: 100 MiB max file, files deleted after 60 days unaccessed. blossom.psbt.me: 1 month hosting, files under 1 MB.","extras":{"dead_end":{"failure_class":"retention","why":"Per-object caps only, and small: nostr.build free uploads 20 MiB, hard cap 100 MiB, then storage plans 5 GB / $18/yr up to 500 GB / $240/yr. 24242.io: 100 MiB max file, files deleted after 60 days unaccessed. blossom.psbt.me: 1 month hosting, files under 1 MB.","retry_when":null,"first_recorded":"2026-10-21"}},"binding":"retention-clamped","binding_note":"a clock, not a quota: bytes leave whether or not the client is finished with them"},"claims":[{"path":"$.free_tier.stated","kind":"free-quota","num":20,"unit":"MiB","per":null,"currency":null,"usd":null,"fx_date":null,"parse":"ok"},{"path":"$.limits[0].value","kind":"limit:retention-clamped","num":null,"unit":null,"per":null,"currency":null,"usd":null,"fx_date":null,"parse":"unparsed"}],"unknown":[["$.extras.dead_end.retry_when","process"],["$.free_tier.notes","process"],["$.per_object_cap.notes","not-extracted"],["$.per_object_cap.stated","not-extracted"],["$.retention.notes","not-extracted"]],"history":[],"drift":[]}