Pith Number

pith:7CJCCUPQ

pith:1998:7CJCCUPQMZGWJXOM6RT4354ZOB

not attested not anchored not stored refs pending

The Instability Strip for Pre--Main-Sequence Stars

F. Palla (Astrophys. Obs. Of Arcetri), M. Marconi (Astron. Obs. of Capodimonte)

arxiv:astro-ph/9809254 v1 · 1998-09-21 · 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{7CJCCUPQMZGWJXOM6RT4354ZOB}

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	2026-07-04T16:07:02.305142Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8922151f0664d64ddccf467cdf7997062434c7a3b8a1989345530bc95df765c

Aliases

arxiv: astro-ph/9809254 · arxiv_version: astro-ph/9809254v1 · doi: 10.48550/arxiv.astro-ph/9809254 · pith_short_12: 7CJCCUPQMZGW · pith_short_16: 7CJCCUPQMZGWJXOM · pith_short_8: 7CJCCUPQ

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/7CJCCUPQMZGWJXOM6RT4354ZOB \
  | 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: f8922151f0664d64ddccf467cdf7997062434c7a3b8a1989345530bc95df765c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d8cf329134c1ba8eff00b4cf5c5f0aa627f49da31c9daf772ac1f82e840750d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-09-21T09:41:44Z",
    "title_canon_sha256": "8ed4f2f17c30b8001abc161f5aa1b0370fe4d8c9a68c6c25a5022db76065152e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9809254",
    "kind": "arxiv",
    "version": 1
  }
}