Pith Number

pith:JOFZJD7K

pith:2010:JOFZJD7KUGR5633AGSYNUNB3FT

not attested not anchored not stored refs pending

The metallicity of the nebula surrounding the ultra-luminous X-ray source NGC 1313 X-2

(2) INAF-OAPD), E. Ripamonti (1), L. Zampieri (2), M. Colpi (1) ((1) Universita' di Milano-Bicocca, M. Mapelli (1)

arxiv:1009.5708 v1 · 2010-09-28 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JOFZJD7KUGR5633AGSYNUNB3FT}

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	2026-05-18T02:05:15.874286Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b8b948feaa1a3df6f6034b0da343b2cf628794cb351bb23232f327888314869

Aliases

arxiv: 1009.5708 · arxiv_version: 1009.5708v1 · doi: 10.48550/arxiv.1009.5708 · pith_short_12: JOFZJD7KUGR5 · pith_short_16: JOFZJD7KUGR5633A · pith_short_8: JOFZJD7K

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/JOFZJD7KUGR5633AGSYNUNB3FT \
  | 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: 4b8b948feaa1a3df6f6034b0da343b2cf628794cb351bb23232f327888314869

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51554c0fc07cd657f0e5a366db1c6b707ef5f988962e77a2dcd60d1192be2dd5",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-09-28T21:50:23Z",
    "title_canon_sha256": "76d2a7ba8e985ef829ce81f9a5cad15d2e0d569c16c1eefdb40cb83f8f0117bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.5708",
    "kind": "arxiv",
    "version": 1
  }
}