Pith Number

pith:2GGJN6SS

pith:2004:2GGJN6SSQCNNEONVM32Y4FEYFK

not attested not anchored not stored refs pending

Mid-Infrared IRS Spectroscopy of NGC 7331: A First Look at the SINGS Legacy

A. Li, B.T. Draine, C. Leitherer, C.W. Engelbracht, D.A. Dale, D. Calzetti, D.J. Hollenbach, E.J. Murphy, F. Walter, G. Helou, G.H. Rieke, G.J. Bendo, H. Roussel, J.D.T. Smith, Jr., K.D. Gordon, L. Armus, L. Kewley, M.D. Thornley, M.G. Wolfire, M.J. Meyer, M.J. Rieke, M.W. Regan, R.C. Kennicutt, S. Malhotra, T.H. Jarrett

arxiv:astro-ph/0406332 v1 · 2004-06-14 · 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{2GGJN6SSQCNNEONVM32Y4FEYFK}

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	2026-05-18T01:40:36.982212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d18c96fa52809ad239b566f58e14982a95e6e27f380b0213e6f3137f02e76a5c

Aliases

arxiv: astro-ph/0406332 · arxiv_version: astro-ph/0406332v1 · doi: 10.48550/arxiv.astro-ph/0406332 · pith_short_12: 2GGJN6SSQCNN · pith_short_16: 2GGJN6SSQCNNEONV · pith_short_8: 2GGJN6SS

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/2GGJN6SSQCNNEONVM32Y4FEYFK \
  | 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: d18c96fa52809ad239b566f58e14982a95e6e27f380b0213e6f3137f02e76a5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "112e388ac4211aedc76a1d4dcefb63cab2c4d37e2e9a402b67a0bd13c4f21626",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-06-14T21:32:38Z",
    "title_canon_sha256": "cca1c0239c12b8f4b4349a94e3044a65486a66ce689dc890963ecf8668496d7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0406332",
    "kind": "arxiv",
    "version": 1
  }
}