Pith Number

pith:QE2BYBZ7

pith:2000:QE2BYBZ7Y4HSDY4RLD4F5IUAUT

not attested not anchored not stored refs pending

Keck Speckle Imaging of the White Dwarf G29-38: No Brown Dwarf Companion Detected

Christopher D. Koresko (JPL), Marc J. Kuchner (Caltech), Michael E. Brown (Caltech)

arxiv:astro-ph/0002039 v1 · 2000-02-02 · 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{QE2BYBZ7Y4HSDY4RLD4F5IUAUT}

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	2026-07-04T16:16:00.423203Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81341c073fc70f21e39158f85ea280a4d653c77de2e0bfa13f8bf358027a0a90

Aliases

arxiv: astro-ph/0002039 · arxiv_version: astro-ph/0002039v1 · doi: 10.48550/arxiv.astro-ph/0002039 · pith_short_12: QE2BYBZ7Y4HS · pith_short_16: QE2BYBZ7Y4HSDY4R · pith_short_8: QE2BYBZ7

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/QE2BYBZ7Y4HSDY4RLD4F5IUAUT \
  | 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: 81341c073fc70f21e39158f85ea280a4d653c77de2e0bfa13f8bf358027a0a90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8099712b71b12166262d288ab4b91ddf7036bea4ec6624eca697b754f49e8cf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-02-02T04:58:10Z",
    "title_canon_sha256": "840ccb5556e9ef123263ebb0918bf0feaa7d1d53a5701ab7033c0e1262437982"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0002039",
    "kind": "arxiv",
    "version": 1
  }
}