Pith Number

pith:OOBRGODN

pith:2013:OOBRGODNBJYZ7DMVRW5MULKREO

not attested not anchored not stored refs pending

One, two or three stars? An investigation of an unusual eclipsing binary candidate undergoing dramatic period changes

A. J. Norton, D. R. S. Boyd, M. E. Lohr, U. C. Kolb

arxiv:1309.1666 v1 · 2013-09-06 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OOBRGODNBJYZ7DMVRW5MULKREO}

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	2026-05-18T01:47:49.026919Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

738313386d0a719f8d958dbaca2d51239649ef3986e3e65ce87821cb688a5d93

Aliases

arxiv: 1309.1666 · arxiv_version: 1309.1666v1 · doi: 10.48550/arxiv.1309.1666 · pith_short_12: OOBRGODNBJYZ · pith_short_16: OOBRGODNBJYZ7DMV · pith_short_8: OOBRGODN

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/OOBRGODNBJYZ7DMVRW5MULKREO \
  | 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: 738313386d0a719f8d958dbaca2d51239649ef3986e3e65ce87821cb688a5d93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2ba97fe593a79c1a833a1afb60b70adc47cf37e511389517716e620e6736be9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-09-06T14:59:12Z",
    "title_canon_sha256": "4b2d5e434889c30c10ab5ece8f72a8a98f8c24e09e565deb0c6a74400540ca31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1666",
    "kind": "arxiv",
    "version": 1
  }
}