Pith Number

pith:FAKW65WX

pith:2005:FAKW65WXJPV3NDY2Y3VHSIJRL2

not attested not anchored not stored refs pending

Origins of Brown Dwarfs

the Netherlands), Viki Joergens (Sterrewacht Leiden / Leiden Observatory

arxiv:astro-ph/0501220 v2 · 2005-01-12 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FAKW65WXJPV3NDY2Y3VHSIJRL2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:40:34.558132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28156f76d74bebb68f1ac6ea7921315eac3310bbcf3684b657425f6383402715

Aliases

arxiv: astro-ph/0501220 · arxiv_version: astro-ph/0501220v2 · doi: 10.48550/arxiv.astro-ph/0501220 · pith_short_12: FAKW65WXJPV3 · pith_short_16: FAKW65WXJPV3NDY2 · pith_short_8: FAKW65WX

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/FAKW65WXJPV3NDY2Y3VHSIJRL2 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 28156f76d74bebb68f1ac6ea7921315eac3310bbcf3684b657425f6383402715

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e68dba6193b2660cbd274aee202a3eea2bd92b044c131a7cbb5beaecac7fea33",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-01-12T16:42:29Z",
    "title_canon_sha256": "9b0238d54a5ddbc17c00abd6a4b3a3d69284fb976d3e1f4b9ac37e4740e2d05a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0501220",
    "kind": "arxiv",
    "version": 2
  }
}