blossom.band /

blossom.band · Storage · 2 records · JSON

Blossom servers (blossom.band / blossom.nostr.build, run by nostr.build) StoragecaveatcardcardRper-object-cap
blossom.band / nostr.build blossom (free tier) Storagefails: quotaemail?card?R

Blossom servers (blossom.band / blossom.nostr.build, run by nostr.build) Storage

caveatcardcardRper-object-cap

blossom.band/ · media · storage/blossom-servers · JSON · compare

Free tier	'Free uploads for everyone, from any Blossom-capable client.' 'A hard cap of 100 MiB per upload (20 MiB for free uploads), with no limit on the number of uploads or retention.' unit mixed; metered on unstated
Price	none stated
Per-object cap	100 MiB per upload (104857600 bytes)
Retention	'Free uploads for everyone, from any Blossom-capable client.' 'A hard cap of 100 MiB per upload (20 MiB for free uploads), with no limit on the number of uploads or retention.'
Egress	unmetered, direct CDN URLs, CORS '*'. Reads 307-redirect to image.nostr.build which serves with Accept-Ranges and 206.
Identity	card derived from the record's prose, not from an identity field, and no signup was executed: er-object-cap: 20 MiB for free uploads (100 MiB only on the $18/yr plan); I measured 15 MiB accepted and 25 MiB rejected with 413 'File size exceeds the maximum allowed size of 20 Mi
Limits	per-object-cap 100 MiB per upload source write-gated application/zip and application/octet-stream were both 415 'File type not allowed' source write-gated application/octet-stream got 400 'Content-Type header does not match the file content' source per-object-cap: 20 MiB for free uploads (100 MiB only on the $18/yr plan); I measured 15 MiB accepted and 25 MiB rejected with 413 'File size exceeds the maximum allowed size of 20 MiB'. Type gate is real and content-sniffed: application/zip and application/octet-stream were both 415 'File type not allowed'; PNG bytes sent with Content-Type: application/octet-stream got 400 'Content-Type header does not match the file content'. retention: none stated, 'no limit on ... retention'.
Binding	per-object-cap the per-object cap sets the shard size and therefore the object count; it bounds the total more tightly than any headline quota
Interface	rest, cli rest
Tooling	Blossom protocol: PUT /upload with an 'Authorization: Nostr <base64 kind-24242 event>' header signed by any self-generated secp256k1 key — no signup, no account, no email. Any Nostr client (Amethyst, Coracle, nak, blossom-server CLI) speaks it.
Composes with	Identity is a pubkey you generate offline in one line of code — unlimited free identities, zero cost, zero email. Each pubkey gets its own npub1....blossom.band hostname at upload time. 20 MiB x unlimited uploads x unlimited pubkeys. At 19 MiB per object, 10 TiB = ~550,000 uploads across ~550k keys, or a few thousand keys each doing 100 uploads.
Reliability	A ~19 MiB upload returned HTTP 500 'Error uploading the file: unknown error' while 5 and 15 MiB succeeded, so the usable ceiling is somewhat below the advertised 20 MiB; one 5 MiB upload took 14 s from the client.
Notes	'Free uploads for everyone, from any Blossom-capable client.' 'A hard cap of 100 MiB per upload (20 MiB for free uploads), with no limit on the number of uploads or retention.'
Evidence rung	reported One page read moves it to documented.
Checked	2026-10-21 (inherited); stale on 2026-11-04
Parsed numbers	`$.limits[0].value` limit:per-object-cap 100.0 MiB

Evidence (3)

date	source	what it proved
2026-10-21	blossom.band/	'Free uploads for everyone, from any Blossom-capable client'; 'A hard cap of 100 MiB per upload (20 MiB for free uploads), with no limit on the number of uploads or retention'
2026-10-21	blossom.band/upload	probe: PUT with self-signed kind-24242 auth -> 201 CREATED, url https://npub1n33yj...blossom.band/<sha256>.png, then GET -L -> 200, 1266 bytes, sha256 identical to uploaded file
2026-10-21	withheld	probe: 15,728,509-byte PNG -> 201; 26,214,269-byte PNG -> 413 'File size exceeds the maximum allowed size of 20 MiB'; probe GET with Range: bytes=1000-1099 -> 206 Content-Range: bytes 1000-1099/5242749

More fields (2)

{
 "verdict_note": null,
 "unit_note": "free_tier.unit is 'mixed' because the headline is denominated in MiB or KiB, which the schema enum does not carry; the verbatim free_tier.stated keeps the true unit. See the storage-dossier handover."
}

Unknown or withheld values (5)

$.evidence[2].url private-url
$.extras.verdict_note withheld
$.free_tier.notes process
$.per_object_cap.notes not-extracted
$.retention.notes not-extracted

blossom.band / nostr.build blossom (free tier) Storage

fails: quotaemail?card?R

blossom.band/ · rejected-provider · storage/blossom-band-nostr-build-blossom · JSON · compare

Free tier	Free uploads are 20 MiB per file with no retention guarantee ('A hard cap of 100 MiB per upload (20 MiB for free uploads)'), and the BUD-06 pre-flight is actively refused to non-browser clie unit none; metered on none
Price	none stated
Per-object cap	not recorded
Retention	not recorded
Egress	not recorded
Identity	email (placeholder) not published
Binding	none no constraint of a named kind was recorded; the verdict rests on the quota sentence rather than on a named limit
Interface	unknown
Tooling	not recorded
Composes with	not recorded
Reliability	Free uploads are 20 MiB per file with no retention guarantee ('A hard cap of 100 MiB per upload (20 MiB for free uploads)'), and the BUD-06 pre-flight is actively refused to non-browser clie
Notes	Free uploads are 20 MiB per file with no retention guarantee ('A hard cap of 100 MiB per upload (20 MiB for free uploads)'), and the BUD-06 pre-flight is actively refused to non-browser clie
Evidence rung	reported
Checked	2026-10-21 (inherited); stale on 2026-11-04

Evidence (3)

date	source	what it proved
2026-10-21	blossom.band/	Free uploads are 20 MiB per file with no retention guarantee ('A hard cap of 100 MiB per upload (20 MiB for free uploads)'), and the BUD-06 pre-flight is actively refused to non-browser clie
2026-10-21	b.nostr.build/	cited as the basis of the rejection: Free uploads are 20 MiB per file with no retention guarantee ('A hard cap of 100 MiB per upload (20 MiB for free uploads)'), and the BUD-06 pre-flight is actively refused to non-browser clie
2026-10-21	blossom.band/upload	cited as the basis of the rejection: Free uploads are 20 MiB per file with no retention guarantee ('A hard cap of 100 MiB per upload (20 MiB for free uploads)'), and the BUD-06 pre-flight is actively refused to non-browser clie

More fields (1)

{
 "dead_end": {
  "failure_class": "retention",
  "why": "Free uploads are 20 MiB per file with no retention guarantee ('A hard cap of 100 MiB per upload (20 MiB for free uploads)'), and the BUD-06 pre-flight is actively refused to non-browser clie",
  "retry_when": null,
  "first_recorded": "2026-10-21"
 }
}

Unknown or withheld values (15)

$.chaining not-recorded
$.confidence_note withheld
$.egress.terms not-recorded
$.extras.dead_end.retry_when process
$.free_tier.notes process
$.identity_cost.detail defaulted
$.identity_cost.kind identity-defaulted
$.interface interface-unknown
$.interface_detail withheld
$.limits_note process
$.per_object_cap.notes not-recorded
$.per_object_cap.stated not-recorded
$.retention.notes process
$.retention.stated not-recorded
$.tooling not-recorded