Pith Number

pith:4WHPPLIW

pith:2006:4WHPPLIWPAPUGFPKHFDGACTAEL

not attested not anchored not stored refs pending

Improved age constraints for the AB Dor quadruple system - The binary nature of AB Dor B

Eric Nielsen, Herve Bouy, Laird Close, Markus Hartung, Markus Janson, Rainer Lenzen, Thomas Henning, Wolfgang Brandner

arxiv:astro-ph/0611616 v1 · 2006-11-20 · 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{4WHPPLIWPAPUGFPKHFDGACTAEL}

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	2026-07-04T16:59:40.265357Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e58ef7ad16781f4315ea3946600a6022ff2dbed64465b90de2949d14ef536318

Aliases

arxiv: astro-ph/0611616 · arxiv_version: astro-ph/0611616v1 · doi: 10.48550/arxiv.astro-ph/0611616 · pith_short_12: 4WHPPLIWPAPU · pith_short_16: 4WHPPLIWPAPUGFPK · pith_short_8: 4WHPPLIW

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/4WHPPLIWPAPUGFPKHFDGACTAEL \
  | 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: e58ef7ad16781f4315ea3946600a6022ff2dbed64465b90de2949d14ef536318

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07479e4d40606811f2c0b842313ffe6a6b9a42952a0e3ad0fb7fd7e97bc9e493",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-11-20T09:11:27Z",
    "title_canon_sha256": "c02e8f09fea238a11f7d57c8e262de434c46912ffe74263786d195ac466d9264"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0611616",
    "kind": "arxiv",
    "version": 1
  }
}