Pith Number

pith:A43V2CDZ

pith:2009:A43V2CDZ6LLRFV2LIDXNLOS3KW

not attested not anchored not stored refs pending

The Infrared Spectra of Very Large Irregular Polycyclic Aromatic Hydrocarbons (PAHs): Observational Probes of Astronomical PAH Geometry, Size and Charge

Charles W. Bauschlicher, Els Peeters, Jr., Louis J. Allamandola

arxiv:0903.0412 v1 · 2009-03-02 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A43V2CDZ6LLRFV2LIDXNLOS3KW}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:48:02.812279Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07375d0879f2d712d74b40eed5ba5b55b625b0c3c880152c685d4e3e8a698450

Aliases

arxiv: 0903.0412 · arxiv_version: 0903.0412v1 · doi: 10.48550/arxiv.0903.0412 · pith_short_12: A43V2CDZ6LLR · pith_short_16: A43V2CDZ6LLRFV2L · pith_short_8: A43V2CDZ

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/A43V2CDZ6LLRFV2LIDXNLOS3KW \
  | 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: 07375d0879f2d712d74b40eed5ba5b55b625b0c3c880152c685d4e3e8a698450

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4653a18ea36ed15a84e878501f9ee6aa5b3a17a2f07500eba468667959c414b9",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-03-02T23:33:22Z",
    "title_canon_sha256": "2735a337679a7784a0ffe82294b939fd9f70d29fc5e3f6fd14045617d6e5d2e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.0412",
    "kind": "arxiv",
    "version": 1
  }
}