Pith Number

pith:FCMED542

pith:2015:FCMED542QTDLDIWOK5KQZNPM7L

not attested not anchored not stored refs pending

Optical Identification of He White Dwarfs Orbiting Four Millisecond Pulsars in the Globular Cluster 47 Tucanae

B. Lanzoni, C. Pallanca, E. Dalessandro, F. R. Ferraro, M. Cadelano, M. Salaris, P. C. C. Freire

arxiv:1509.01397 v1 · 2015-09-04 · astro-ph.SR · astro-ph.GA · 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{FCMED542QTDLDIWOK5KQZNPM7L}

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	2026-05-18T01:30:18.039122Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

289841f79a84c6b1a2ce57550cb5ecfaf1b346b1128299b4633ad82223159d7b

Aliases

arxiv: 1509.01397 · arxiv_version: 1509.01397v1 · doi: 10.48550/arxiv.1509.01397 · pith_short_12: FCMED542QTDL · pith_short_16: FCMED542QTDLDIWO · pith_short_8: FCMED542

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/FCMED542QTDLDIWOK5KQZNPM7L \
  | 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: 289841f79a84c6b1a2ce57550cb5ecfaf1b346b1128299b4633ad82223159d7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebd09de3a9275fcfd85c3283433dd297193c26b0dee704e9396c9242c5868757",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-09-04T10:22:23Z",
    "title_canon_sha256": "8c1656a1a651cd7af6257e0fe20456c8fa880691399e55a402d944860cb6f846"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01397",
    "kind": "arxiv",
    "version": 1
  }
}