Pith Number

pith:4XHVKCBQ

pith:2018:4XHVKCBQ6TWMO3Q2SVBWAREM2F

not attested not anchored not stored refs pending

Laboratory photo-chemistry of pyrene clusters: an efficient way to form large PAHs

Alexander G. G. M. Tielens, Junfeng Zhen, Tao Chen

arxiv:1809.09770 v1 · 2018-09-26 · astro-ph.IM · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4XHVKCBQ6TWMO3Q2SVBWAREM2F}

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	2026-05-18T00:04:43.687642Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5cf550830f4ecc76e1a954360448cd147e00bd9a1391943b01100a7b73cddb9

Aliases

arxiv: 1809.09770 · arxiv_version: 1809.09770v1 · doi: 10.48550/arxiv.1809.09770 · pith_short_12: 4XHVKCBQ6TWM · pith_short_16: 4XHVKCBQ6TWMO3Q2 · pith_short_8: 4XHVKCBQ

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/4XHVKCBQ6TWMO3Q2SVBWAREM2F \
  | 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: e5cf550830f4ecc76e1a954360448cd147e00bd9a1391943b01100a7b73cddb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39200170ba37bb4a62cb35a966b3b05f23ed11c53c66aef5147358dada129990",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-09-26T00:44:34Z",
    "title_canon_sha256": "8a139beaa61446b2893f1bd91d9199ac5f7daecc97040850f622bc9cdb0954fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.09770",
    "kind": "arxiv",
    "version": 1
  }
}