Pith Number

pith:C56XFKZW

pith:2009:C56XFKZWNJEL64NX6WW2UO475U

not attested not anchored not stored refs pending

Laboratory studies of polycyclic aromatic hydrocarbons: the search for interstellar candidates

A. Simon, C. Joblin, G. Mulas, O. Berne

arxiv:0904.3185 v1 · 2009-04-21 · 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{C56XFKZWNJEL64NX6WW2UO475U}

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	2026-07-04T15:41:35.265998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

177d72ab366a48bf71b7f5adaa3b9fed30a49c29512314a5e57f24bfa78979fb

Aliases

arxiv: 0904.3185 · arxiv_version: 0904.3185v1 · doi: 10.48550/arxiv.0904.3185 · pith_short_12: C56XFKZWNJEL · pith_short_16: C56XFKZWNJEL64NX · pith_short_8: C56XFKZW

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/C56XFKZWNJEL64NX6WW2UO475U \
  | 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: 177d72ab366a48bf71b7f5adaa3b9fed30a49c29512314a5e57f24bfa78979fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab0fe5386f0c070a1834ca9780e3d6771d5b8b66db0447ab9ee8270719cb1a46",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-04-21T08:41:56Z",
    "title_canon_sha256": "66013dc82c7dfe62f5b14f5b5dc0aeca10b2153d21873e1686c5ec2c2bcd7c2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3185",
    "kind": "arxiv",
    "version": 1
  }
}