Pith Number

pith:3QLR4G2Z

pith:2006:3QLR4G2ZIPWMZHWZXF5VNYY76R

not attested not anchored not stored refs pending

Chemical stratification in the atmosphere of Ap star HD 133792. Regularized solution of the vertical inversion problem

O. Kochukhov, S. Bagnulo, T. Ryabchikova, V. Makaganyk, V. Tsymbal

arxiv:astro-ph/0609312 v1 · 2006-09-12 · 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{3QLR4G2ZIPWMZHWZXF5VNYY76R}

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	2026-07-04T16:59:23.524818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc171e1b5943eccc9ed9b97b56e31ff47111af7f4e31e827401b07622d6f33d7

Aliases

arxiv: astro-ph/0609312 · arxiv_version: astro-ph/0609312v1 · doi: 10.48550/arxiv.astro-ph/0609312 · pith_short_12: 3QLR4G2ZIPWM · pith_short_16: 3QLR4G2ZIPWMZHWZ · pith_short_8: 3QLR4G2Z

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/3QLR4G2ZIPWMZHWZXF5VNYY76R \
  | 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: dc171e1b5943eccc9ed9b97b56e31ff47111af7f4e31e827401b07622d6f33d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d70b508fbaaf75d09e5cbdf4e9febb5fa95fa6b8e79b5199df600abbb081e1d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-09-12T10:27:55Z",
    "title_canon_sha256": "d4ce44988e630bf495ee365f0fb44bb9ba6f41a974d132da579eeec3d8ea819d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0609312",
    "kind": "arxiv",
    "version": 1
  }
}