Pith Number

pith:2EQQYZ5B

pith:2009:2EQQYZ5B5FNJKGC7GUPXQFDGI2

not attested not anchored not stored refs pending

Discovery of a 205.89 Hz accreting-millisecond X-ray pulsar in the globular cluster NGC 6440

A. Patruno, C. Heinke, C. Markwardt, D. Altamirano, J. Swank, M. Linares, M. van der Klis, R. Wijnands, T. Strohmayer

arxiv:0911.0435 v2 · 2009-11-02 · astro-ph.HE · 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{2EQQYZ5B5FNJKGC7GUPXQFDGI2}

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	2026-05-18T04:29:35.130577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1210c67a1e95a95185f351f78146646a5df147ab3ad3e7f2b13729ace160675

Aliases

arxiv: 0911.0435 · arxiv_version: 0911.0435v2 · doi: 10.48550/arxiv.0911.0435 · pith_short_12: 2EQQYZ5B5FNJ · pith_short_16: 2EQQYZ5B5FNJKGC7 · pith_short_8: 2EQQYZ5B

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/2EQQYZ5B5FNJKGC7GUPXQFDGI2 \
  | 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: d1210c67a1e95a95185f351f78146646a5df147ab3ad3e7f2b13729ace160675

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6229361eb88bedda7a134ae7ca28b1c5514895269261930bba3fa91798c1b98",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-11-02T21:52:28Z",
    "title_canon_sha256": "2ee2f5ee6f60b292ed2ebb0dc057aa8beb9df4a892246bdd414e8d675586d984"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0435",
    "kind": "arxiv",
    "version": 2
  }
}