Pith Number

pith:NYHQXZMY

pith:2008:NYHQXZMY6GDN47DSDCSTKUSVLF

not attested not anchored not stored refs pending

The Chandra survey of the SMC "Bar": II. Optical counterparts of X-ray sources

2), (2) University of Crete, Andreas Zezas (1), Department of Physics, Despina Hatzidimitriou (2), Greece), Jonathan C. McDowell (1) ((1) Harvard-Smithsonian Center for Astrophysics, Vallia Antoniou (1

arxiv:0812.1226 v1 · 2008-12-05 · 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{NYHQXZMY6GDN47DSDCSTKUSVLF}

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	2026-05-18T02:35:13.553173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e0f0be598f186de7c7218a5355255597c42dc01aae891e8e36f2b8d6fd879fe

Aliases

arxiv: 0812.1226 · arxiv_version: 0812.1226v1 · doi: 10.48550/arxiv.0812.1226 · pith_short_12: NYHQXZMY6GDN · pith_short_16: NYHQXZMY6GDN47DS · pith_short_8: NYHQXZMY

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/NYHQXZMY6GDN47DSDCSTKUSVLF \
  | 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: 6e0f0be598f186de7c7218a5355255597c42dc01aae891e8e36f2b8d6fd879fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08583b19e914a10752bf53680737ef2489a5143f58ed04446fd532bdd2b51c1f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-05T21:01:03Z",
    "title_canon_sha256": "8700adaaebd039706d25102bb9accaa737a23c28e7c6664e053f81db3d60159a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.1226",
    "kind": "arxiv",
    "version": 1
  }
}