Pith Number

pith:PFR2JIPM

pith:2009:PFR2JIPMZVE243TVSD6563EYZY

not attested not anchored not stored refs pending

New evolutionary sequences for hot H-deficient white dwarfs on the basis of a full account of progenitor evolution

A. D. Romero, A. H. C\'orsico, E. Garc\'ia-Berro, J. A. Panei, L. G. Althaus, M. M. Miller Bertolami, R. D. Rohrmann, S. O. Kepler

arxiv:0909.2689 v1 · 2009-09-14 · 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{PFR2JIPMZVE243TVSD6563EYZY}

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	2026-05-18T02:34:30.046843Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7963a4a1eccd49ae6e7590fddf6c98ce20787dcf19b686e5dec41e8b5fd94047

Aliases

arxiv: 0909.2689 · arxiv_version: 0909.2689v1 · doi: 10.48550/arxiv.0909.2689 · pith_short_12: PFR2JIPMZVE2 · pith_short_16: PFR2JIPMZVE243TV · pith_short_8: PFR2JIPM

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/PFR2JIPMZVE243TVSD6563EYZY \
  | 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: 7963a4a1eccd49ae6e7590fddf6c98ce20787dcf19b686e5dec41e8b5fd94047

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b02cd2b217166b39621d302c64b36166ed8c6a29adb8201de3b9a8b892c607b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-14T22:54:38Z",
    "title_canon_sha256": "b3bf9c1ee217a5cdee4e72786ab3cb70250accc517c187f25f8e3e2634ee5fb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.2689",
    "kind": "arxiv",
    "version": 1
  }
}