Pith Number

pith:P3MI3VW2

pith:2013:P3MI3VW2FXHIAZGKV5UJ6HN2AK

not attested not anchored not stored refs pending

A Bayesian Approach to Deriving Ages of Individual Field White Dwarfs

David van Dyk, Erin M. O'Malley, Ted von Hippel

arxiv:1307.7145 v1 · 2013-07-26 · 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{P3MI3VW2FXHIAZGKV5UJ6HN2AK}

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	2026-05-18T01:20:26.656949Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ed88dd6da2dce8064caaf689f1dba02ac42e3983007994601f4e0f0dcf5fad5

Aliases

arxiv: 1307.7145 · arxiv_version: 1307.7145v1 · doi: 10.48550/arxiv.1307.7145 · pith_short_12: P3MI3VW2FXHI · pith_short_16: P3MI3VW2FXHIAZGK · pith_short_8: P3MI3VW2

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/P3MI3VW2FXHIAZGKV5UJ6HN2AK \
  | 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: 7ed88dd6da2dce8064caaf689f1dba02ac42e3983007994601f4e0f0dcf5fad5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2b882df9ec1afb9c5651dd8321719f31ca29bba6c50f1176f35fcb65bae92be",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-07-26T20:00:03Z",
    "title_canon_sha256": "821d4f2b4cb7e555843a57398e2775558bc64d5bb35e1306095c56b991191cce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7145",
    "kind": "arxiv",
    "version": 1
  }
}