Pith Number

pith:JDHA4PGK

pith:1994:JDHA4PGK4ZEHAXOVTXBKL5HHCN

not attested not anchored not stored refs pending

BD+30 3639: The Infrared Spectrum During Post-AGB Stellar Evolution

A.A. Zijlstra, E. Kruegel, R. Siebenmorgen

arxiv:astro-ph/9408039 v1 · 1994-08-13 · 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{JDHA4PGK4ZEHAXOVTXBKL5HHCN}

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	2026-05-18T01:40:24.415896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

48ce0e3ccae648705dd59dc2a5f4e71351907d8b0f621f493b401d0c71c434d3

Aliases

arxiv: astro-ph/9408039 · arxiv_version: astro-ph/9408039v1 · doi: 10.48550/arxiv.astro-ph/9408039 · pith_short_12: JDHA4PGK4ZEH · pith_short_16: JDHA4PGK4ZEHAXOV · pith_short_8: JDHA4PGK

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/JDHA4PGK4ZEHAXOVTXBKL5HHCN \
  | 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: 48ce0e3ccae648705dd59dc2a5f4e71351907d8b0f621f493b401d0c71c434d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55554ffbd0c8d4bcb3109969afa00b1acacdd5cfe2917c748451a5a980378989",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-08-13T09:44:49Z",
    "title_canon_sha256": "fe824951b8d81ea44dad18370863a2b5c0dce8234c22e752583ff268260bf244"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9408039",
    "kind": "arxiv",
    "version": 1
  }
}