Pith Number

pith:JQ2QBMX4

pith:2000:JQ2QBMX4S5WCZH6HBIEKGXFEZQ

not attested not anchored not stored refs pending

The population of close double white dwarfs in the Galaxy

(2) Astronomical Institute "Anton Pannekoek", (3) MIT, (4) Astronomical Institute, Amsterdam, Cambridge, Frank Verbunt (4) ((1) Institute of Astronomy of the RAS, Gijs Nelemans (2), Lev Yungelson (1), Moscow, Russia, Simon. F. Portegies Zwart (3), the Netherlands), The Netherlands, USA, Utrecht, Utrecht University

arxiv:astro-ph/0011248 v1 · 2000-11-13 · 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{JQ2QBMX4S5WCZH6HBIEKGXFEZQ}

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	2026-05-18T02:04:00.847035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c3500b2fc976c2c9fc70a08a35ca4cc080ad9b37d8e16fec13a7948d9e86de8

Aliases

arxiv: astro-ph/0011248 · arxiv_version: astro-ph/0011248v1 · doi: 10.48550/arxiv.astro-ph/0011248 · pith_short_12: JQ2QBMX4S5WC · pith_short_16: JQ2QBMX4S5WCZH6H · pith_short_8: JQ2QBMX4

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/JQ2QBMX4S5WCZH6HBIEKGXFEZQ \
  | 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: 4c3500b2fc976c2c9fc70a08a35ca4cc080ad9b37d8e16fec13a7948d9e86de8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d0cd5ccf5ac076af9657baa3b2406d302e4d856ac9e74b6143b8d4f56044444",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-11-13T14:13:52Z",
    "title_canon_sha256": "c96c78e0076b5128acc7d057b3fd059605b547a314add989ba1827aa17c97243"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0011248",
    "kind": "arxiv",
    "version": 1
  }
}