Pith Number

pith:7GSXAA7V

pith:2008:7GSXAA7VDX5SAVFWHDT2YIVJZA

not attested not anchored not stored refs pending

Evidence of thin helium envelopes in PG1159 stars

A. H. C\'orsico, E. Garc\'ia--Berro, L. G. Althaus, M. M. Miller Bertolami, S. O. Kepler

arxiv:0802.3363 v1 · 2008-02-22 · 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{7GSXAA7VDX5SAVFWHDT2YIVJZA}

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	2026-07-04T17:09:26.506381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9a57003f51dfb2054b638e7ac22a9c82c8521cae5611376d4a14e974fb394aa

Aliases

arxiv: 0802.3363 · arxiv_version: 0802.3363v1 · doi: 10.48550/arxiv.0802.3363 · pith_short_12: 7GSXAA7VDX5S · pith_short_16: 7GSXAA7VDX5SAVFW · pith_short_8: 7GSXAA7V

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/7GSXAA7VDX5SAVFWHDT2YIVJZA \
  | 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: f9a57003f51dfb2054b638e7ac22a9c82c8521cae5611376d4a14e974fb394aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9b3368474b6c3f323381bbe373e80780b809c4e5d4fd2841ffe1c0d84dd98c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-02-22T18:53:43Z",
    "title_canon_sha256": "a622e8d24d1e203d3eb4d3db2bb593d780f68ffe51d6ad4182f94dcd292f527d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0802.3363",
    "kind": "arxiv",
    "version": 1
  }
}