Pith Number

pith:S7FEUKNC

pith:2009:S7FEUKNCGUN4FQ4EDKB57R3YE4

not attested not anchored not stored refs pending

Optical spectroscopy of 20 Be/X-ray Binaries in the Small Magellanic Cloud

2, 2), (2) Harvard-Smithsonian Center for Astrophysics, 3), 3) ((1) Physics Department, (3) IESL, Andreas Zezas (1, Despina Hatzidimitriou (1), FORTH, Greece, Greece), Pablo Reig (1, University of Crete, Vallia Antoniou (1

arxiv:0912.1876 v1 · 2009-12-09 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S7FEUKNCGUN4FQ4EDKB57R3YE4}

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	2026-05-18T02:33:57.006609Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97ca4a29a2351bc2c3841a83dfc7782731b7b35503739978fd5087a6366e2a88

Aliases

arxiv: 0912.1876 · arxiv_version: 0912.1876v1 · doi: 10.48550/arxiv.0912.1876 · pith_short_12: S7FEUKNCGUN4 · pith_short_16: S7FEUKNCGUN4FQ4E · pith_short_8: S7FEUKNC

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/S7FEUKNCGUN4FQ4EDKB57R3YE4 \
  | 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: 97ca4a29a2351bc2c3841a83dfc7782731b7b35503739978fd5087a6366e2a88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "402a037f7b160e02485e915d96a4ae69a2ff0045a38201e8151d13bc437f86ed",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-12-09T22:44:28Z",
    "title_canon_sha256": "559bd45b6a65122f41aebc6779bec5e40f276c24dc1a3a4cc2caf4244e0e5162"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.1876",
    "kind": "arxiv",
    "version": 1
  }
}