Pith Number

pith:FQ6DOI3B

pith:2002:FQ6DOI3BKBZIFFL7NKFEECUT2C

not attested not anchored not stored refs pending

Periodic photometric variability of the brown dwarf Kelu-1

Cambridge), C. G. Tinney (AAO), F. J. Clarke (IoA, K. R. Covey (Carleton College)

arxiv:astro-ph/0201162 v1 · 2002-01-10 · 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{FQ6DOI3BKBZIFFL7NKFEECUT2C}

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	2026-07-04T16:29:14.312213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c3c372361507282957f6a8a420a93d099f7f5b9f6dcab723e2deca8d97ebd6c

Aliases

arxiv: astro-ph/0201162 · arxiv_version: astro-ph/0201162v1 · doi: 10.48550/arxiv.astro-ph/0201162 · pith_short_12: FQ6DOI3BKBZI · pith_short_16: FQ6DOI3BKBZIFFL7 · pith_short_8: FQ6DOI3B

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/FQ6DOI3BKBZIFFL7NKFEECUT2C \
  | 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: 2c3c372361507282957f6a8a420a93d099f7f5b9f6dcab723e2deca8d97ebd6c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca3b2d4548b621eacd32031216d9f74d22f3f433d80bd0044f29dd8354c1146f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-01-10T18:54:50Z",
    "title_canon_sha256": "a54278dbb7e82c09c822c85eb3799abd5cf8772ff374025180a68de94fe3da1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0201162",
    "kind": "arxiv",
    "version": 1
  }
}