Pith Number

pith:U64SPH2J

pith:2009:U64SPH2JTNOUV2Z4BAMKFSLCWY

not attested not anchored not stored refs pending

A Close Binary Star Resolved from Occultation by 87 Sylvia

C. Alcock, Chi-Long Lin, C.-Y. Wen, D.-W. Kim, F. B. Bianco, Hung-Chin Lin, I. de Pater, J. A. Rice, J.-H. Wang, J. J. Lissauer, K. H. Cook, M. E. Schwamb, M. J. Lehner, N. K. Coehlo, R. Dave, R. Porrata, S. L. Marshall, S. Mondal, Sun-Kun King, S.-Y. Wang, T. Axelrod, T. Lee, W. P. Chen, Y.-I. Byun, Zhi-Wei Zhang

arxiv:0901.2318 v1 · 2009-01-15 · 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{U64SPH2JTNOUV2Z4BAMKFSLCWY}

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	2026-05-18T02:14:57.272950Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7b9279f499b5d4aeb3c0818a2c962b632c6e9328ca9f3dd50d8c13672216f9e

Aliases

arxiv: 0901.2318 · arxiv_version: 0901.2318v1 · doi: 10.48550/arxiv.0901.2318 · pith_short_12: U64SPH2JTNOU · pith_short_16: U64SPH2JTNOUV2Z4 · pith_short_8: U64SPH2J

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/U64SPH2JTNOUV2Z4BAMKFSLCWY \
  | 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: a7b9279f499b5d4aeb3c0818a2c962b632c6e9328ca9f3dd50d8c13672216f9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1345b826066eb36a4008ca4aa6176df948ddc2dd9528e72c04bab438b6a7e7d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-01-15T17:12:31Z",
    "title_canon_sha256": "cc0da8047fbd41acd04247212a594ba87ab3b31643b5cdcf57772c57647c4bb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2318",
    "kind": "arxiv",
    "version": 1
  }
}