Pith Number

pith:AOAXX2G5

pith:2000:AOAXX2G5YCPUH4YQP55K3LNJIK

not attested not anchored not stored refs pending

Observational Constraints to the Evolution of Massive Stars

Nino Panagia (ESA/STScI)

arxiv:astro-ph/0002509 v1 · 2000-02-28 · 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{AOAXX2G5YCPUH4YQP55K3LNJIK}

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	2026-05-18T01:21:57.203370Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03817be8ddc09f43f3107f7aadada942965d2b3f3c17953f2d41e1dd0cc520e2

Aliases

arxiv: astro-ph/0002509 · arxiv_version: astro-ph/0002509v1 · doi: 10.48550/arxiv.astro-ph/0002509 · pith_short_12: AOAXX2G5YCPU · pith_short_16: AOAXX2G5YCPUH4YQ · pith_short_8: AOAXX2G5

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/AOAXX2G5YCPUH4YQP55K3LNJIK \
  | 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: 03817be8ddc09f43f3107f7aadada942965d2b3f3c17953f2d41e1dd0cc520e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f5679a1be10fd17e601fa606e6c9002502137c43dd4a4e1f6407ad7e6cccdd4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-02-28T20:38:08Z",
    "title_canon_sha256": "97fdd30e182b7b492a6cf1747cdd6b9f890a3c7d508b55d3ce11677168a9388b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0002509",
    "kind": "arxiv",
    "version": 1
  }
}