Pith Number

pith:ERSIZ6RN

pith:2004:ERSIZ6RN5DS4YILJEZ4ZZUICN2

not attested not anchored not stored refs pending

The far-infrared spectrum of Arp 220

Dpto. Astrof\'isica Molecular e Infrarroja), Eduardo Gonz\'alez-Alfonso (Universidad de Alcal\'a de Henares), Howard A. Smith (Harvard-Smithsonian Center for Astrophysics), Jacqueline Fischer (Naval Research Laboratory), Jos\'e Cernicharo (CSIC

arxiv:astro-ph/0406427 v1 · 2004-06-18 · 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{ERSIZ6RN5DS4YILJEZ4ZZUICN2}

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	2026-05-18T01:09:03.263465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24648cfa2de8e5cc216926799cd1026e9df671e18e9dc0b5fc6dc9cf0d652998

Aliases

arxiv: astro-ph/0406427 · arxiv_version: astro-ph/0406427v1 · doi: 10.48550/arxiv.astro-ph/0406427 · pith_short_12: ERSIZ6RN5DS4 · pith_short_16: ERSIZ6RN5DS4YILJ · pith_short_8: ERSIZ6RN

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/ERSIZ6RN5DS4YILJEZ4ZZUICN2 \
  | 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: 24648cfa2de8e5cc216926799cd1026e9df671e18e9dc0b5fc6dc9cf0d652998

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cc16a3fca0fe6fbdc19158b3a4f73f06fd06d984d03973e7af4965c6e04fe0a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-06-18T18:03:50Z",
    "title_canon_sha256": "3ad0e4da55ef6246f1d3c4ae24e432a66ed5c62a3490126db577e3863210c4c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0406427",
    "kind": "arxiv",
    "version": 1
  }
}