Pith Number

pith:ZZ4R3TNB

pith:2018:ZZ4R3TNBHLRW5LOVE7LRDXSISR

not attested not anchored not stored refs pending

Laboratory gas-phase infrared spectra of two astronomically relevant PAH cations: diindenoperylene, C$_{32}$H$_{16}$$^+$ and dicoronylene, C$_{48}$H$_{20}$$^+$

Alessandra Candian, Alexander G. G. M. Tielens, Harold Linnartz, Jordy Bouwman, Junfeng Zhen, Pablo Castellanos

arxiv:1809.08800 v1 · 2018-09-24 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZZ4R3TNBHLRW5LOVE7LRDXSISR}

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	2026-05-18T00:05:03.523388Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce791dcda13ae36eadd527d711de489466092d276b4bde8467ddc23a8977bdc5

Aliases

arxiv: 1809.08800 · arxiv_version: 1809.08800v1 · doi: 10.48550/arxiv.1809.08800 · pith_short_12: ZZ4R3TNBHLRW · pith_short_16: ZZ4R3TNBHLRW5LOV · pith_short_8: ZZ4R3TNB

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/ZZ4R3TNBHLRW5LOVE7LRDXSISR \
  | 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: ce791dcda13ae36eadd527d711de489466092d276b4bde8467ddc23a8977bdc5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "815c590f5d0fd4c1dee0b28c715f78b44c991c4d944e5c9defc4a6803295dfb5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-09-24T08:37:58Z",
    "title_canon_sha256": "a19f595e2e449609a6e5da61c9cec8e6efbc40fb2268ba80c0655940c19ec271"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.08800",
    "kind": "arxiv",
    "version": 1
  }
}