Pith Number

pith:4NNFLUYF

pith:2008:4NNFLUYF6KMPN7UJNBNNKQ4ACH

not attested not anchored not stored refs pending

The Spitzer View of Low-Metallicity Star Formation: II. Mrk 996, a Blue Compact Dwarf Galaxy with an Extremely Dense Nucleus

(2) Istituto di Radioastronomia, (3) Main Astronomical Observatory, Charlottesville, Firenze, Italy, Kyiv, L. K. Hunt (2), T. X. Thuan (1), Ukraine), USA, Y. I. Izotov (3) ((1) University of Virginia

arxiv:0809.3082 v1 · 2008-09-18 · 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{4NNFLUYF6KMPN7UJNBNNKQ4ACH}

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	2026-05-18T00:14:48.069222Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e35a55d305f298f6fe89685ad5438011fd049022ee281c4d94b194140fe011f8

Aliases

arxiv: 0809.3082 · arxiv_version: 0809.3082v1 · doi: 10.48550/arxiv.0809.3082 · pith_short_12: 4NNFLUYF6KMP · pith_short_16: 4NNFLUYF6KMPN7UJ · pith_short_8: 4NNFLUYF

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/4NNFLUYF6KMPN7UJNBNNKQ4ACH \
  | 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: e35a55d305f298f6fe89685ad5438011fd049022ee281c4d94b194140fe011f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07fc9c9fe2d5bee988d89ef0eb81272db4e2e2fc77d344fd29517ee5d611a1f5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-18T07:16:11Z",
    "title_canon_sha256": "5517465bc9ba1075cc9a6499a3bb5eababab4302ac8fc50b26a604cd7594e185"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.3082",
    "kind": "arxiv",
    "version": 1
  }
}