Pith Number

pith:DD3QSNHP

pith:1999:DD3QSNHPTY227TDBLS7RTQT6XX

not attested not anchored not stored refs pending

Infrared line ratios revealing starburst conditions in galaxies

Brazil), Germany), Israel), Marcella Contini (TAU, Sueli M. Viegas (IAG-USP, Thierry Contini (ESO

arxiv:astro-ph/9904301 v1 · 1999-04-22 · 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{DD3QSNHPTY227TDBLS7RTQT6XX}

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	2026-07-04T14:16:40.663799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18f70934ef9e35afcc615cbf19c27ebdf001b81335398bd533c6ec3f952a93fe

Aliases

arxiv: astro-ph/9904301 · arxiv_version: astro-ph/9904301v1 · doi: 10.48550/arxiv.astro-ph/9904301 · pith_short_12: DD3QSNHPTY22 · pith_short_16: DD3QSNHPTY227TDB · pith_short_8: DD3QSNHP

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/DD3QSNHPTY227TDBLS7RTQT6XX \
  | 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: 18f70934ef9e35afcc615cbf19c27ebdf001b81335398bd533c6ec3f952a93fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16a8d094dde2bdf7548c9204e900dfd79dcc43451a22fb1e3b0a88976cf95888",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-04-22T14:29:41Z",
    "title_canon_sha256": "2200fb8e0ed38a71ea4cfff1624a8530e6f12a02654a47b39c39515b0f232a1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9904301",
    "kind": "arxiv",
    "version": 1
  }
}