Pith Number

pith:QG5VG3TM

pith:2019:QG5VG3TMXAQTZDUQ67T64IILZ3

not attested not anchored not stored refs pending

A New Generation of Cool White Dwarf Atmosphere Models. III. WD J2356$-$209: Accretion of a Planetesimal with an Unusual Composition

L.V.E. Koopmans, N.F. Allard, P. Dufour, R.M. Rich, S. Blouin, S. Salim

arxiv:1902.03219 v1 · 2019-02-08 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QG5VG3TMXAQTZDUQ67T64IILZ3}

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	2026-05-17T23:52:01.240411Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81bb536e6cb8213c8e90f7e7ee210bcefa75875fef5f99b931e577f8d774102a

Aliases

arxiv: 1902.03219 · arxiv_version: 1902.03219v1 · doi: 10.48550/arxiv.1902.03219 · pith_short_12: QG5VG3TMXAQT · pith_short_16: QG5VG3TMXAQTZDUQ · pith_short_8: QG5VG3TM

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/QG5VG3TMXAQTZDUQ67T64IILZ3 \
  | 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: 81bb536e6cb8213c8e90f7e7ee210bcefa75875fef5f99b931e577f8d774102a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f734e9525a9ede8a13eec3844a2f43728f74935cb54c1af12c4996e95559a7f2",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-02-08T18:29:41Z",
    "title_canon_sha256": "2fb5b95308a795e1967caa518d6db099ce241331124b06a0d96466a1c6ae6646"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.03219",
    "kind": "arxiv",
    "version": 1
  }
}