Pith Number

pith:7PKWWA23

pith:2014:7PKWWA23WBXMHDHPKZUYDES7YI

not attested not anchored not stored refs pending

An Interacting O+O Supergiant Close Binary System: Cygnus OB2-5 (V729 Cyg)

B. Yasarsoy, K. Yakut

arxiv:1402.3393 v1 · 2014-02-14 · 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{7PKWWA23WBXMHDHPKZUYDES7YI}

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	2026-05-18T01:44:38.183229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbd56b035bb06ec38cef566981925fc2259c9884f54a5fab4ead24772132da36

Aliases

arxiv: 1402.3393 · arxiv_version: 1402.3393v1 · doi: 10.48550/arxiv.1402.3393 · pith_short_12: 7PKWWA23WBXM · pith_short_16: 7PKWWA23WBXMHDHP · pith_short_8: 7PKWWA23

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/7PKWWA23WBXMHDHPKZUYDES7YI \
  | 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: fbd56b035bb06ec38cef566981925fc2259c9884f54a5fab4ead24772132da36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44d0a650f3aa8c09bd39878f1ce0cd39192f715d2d78ef9241c61e0b63005284",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-02-14T07:56:54Z",
    "title_canon_sha256": "059f0009744df304fb13849951d5437102dfa6734c7aa1a20c482a5568b185be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.3393",
    "kind": "arxiv",
    "version": 1
  }
}