Pith Number

pith:5335272O

pith:2003:5335272O52AYNWYN3AMDWWVCV2

not attested not anchored not stored refs pending

The Role of Polycyclic Aromatic Hydrocarbons in Ultraviolet Extinction. I. Probing small molecular PAHs

Adolf N. Witt, D.C.B. Whittet, F. Salama, Geoffrey C. Clayton, Karl D. Gordon, L.J. Allamandola, Michael J. Wolff, Peter G. Martin, T. P. Snow, Tracy L. Smith

arxiv:astro-ph/0304025 v1 · 2003-04-01 · 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{5335272O52AYNWYN3AMDWWVCV2}

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	2026-07-04T16:36:46.619536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eef7dd7f4eee8186db0dd8183b5aa2aeae3cb28c83abd4c8b4ded977621cc73b

Aliases

arxiv: astro-ph/0304025 · arxiv_version: astro-ph/0304025v1 · doi: 10.48550/arxiv.astro-ph/0304025 · pith_short_12: 5335272O52AY · pith_short_16: 5335272O52AYNWYN · pith_short_8: 5335272O

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/5335272O52AYNWYN3AMDWWVCV2 \
  | 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: eef7dd7f4eee8186db0dd8183b5aa2aeae3cb28c83abd4c8b4ded977621cc73b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "677441a54cadbdb757e9b081edd172530d1584dc03e8676944c2276cf8f07ff6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-04-01T16:11:36Z",
    "title_canon_sha256": "0a6664d5f2a311c4f8d86ac981b61ce7e0d7abc917ebf0db6200058210134a8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0304025",
    "kind": "arxiv",
    "version": 1
  }
}