Pith Number

pith:D3QZGFY3

pith:2009:D3QZGFY3UZ5OUMGDHLL32HRQUX

not attested not anchored not stored refs pending

Polycyclic aromatic hydrocarbon selected galaxies

Christian Leipski, Helmut Meusinger, Holger Drass, Martin Haas, Ralf Siebenmorgen, Rolf Chini

arxiv:0909.1721 v1 · 2009-09-09 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D3QZGFY3UZ5OUMGDHLL32HRQUX}

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	2026-05-18T02:11:58.019254Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ee193171ba67aea30c33ad7bd1e30a5c25fd01e397c50acd85701ad34fa27a3

Aliases

arxiv: 0909.1721 · arxiv_version: 0909.1721v1 · doi: 10.48550/arxiv.0909.1721 · pith_short_12: D3QZGFY3UZ5O · pith_short_16: D3QZGFY3UZ5OUMGD · pith_short_8: D3QZGFY3

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/D3QZGFY3UZ5OUMGDHLL32HRQUX \
  | 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: 1ee193171ba67aea30c33ad7bd1e30a5c25fd01e397c50acd85701ad34fa27a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "455ec1540f525fac1cf4da9e151865e32a70c6252fc73f6e99bb4379dc70ada1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-09T14:56:52Z",
    "title_canon_sha256": "c93564d3e47295c8593d77cb3fde4d187ba0bd74020edc1fd0460d4bdc7e954c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1721",
    "kind": "arxiv",
    "version": 1
  }
}