Pith Number

pith:OJFNQQ2N

pith:2009:OJFNQQ2NKYFK3L3SOFA5ZMQGEH

not attested not anchored not stored refs pending

Positron Annihilation on Polycyclic Aromatic Hydrocarbon molecules in the Interstellar Medium

(2) CESR CNRS/Universite de Toulouse, (3) KTH AlbaNova University Centre Stockholm), N. Guessoum (1), P. Jean (2), W. Gillard (3) ((1) American University of Sharjah

arxiv:0911.0582 v1 · 2009-11-03 · astro-ph.HE · 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{OJFNQQ2NKYFK3L3SOFA5ZMQGEH}

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	2026-05-18T02:11:00.175078Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

724ad8434d560aadaf727141dcb20621c7fff194d5165c576237d6b43985cbb6

Aliases

arxiv: 0911.0582 · arxiv_version: 0911.0582v1 · doi: 10.48550/arxiv.0911.0582 · pith_short_12: OJFNQQ2NKYFK · pith_short_16: OJFNQQ2NKYFK3L3S · pith_short_8: OJFNQQ2N

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/OJFNQQ2NKYFK3L3SOFA5ZMQGEH \
  | 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: 724ad8434d560aadaf727141dcb20621c7fff194d5165c576237d6b43985cbb6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a9f05d61bb334f4a3f6ec925f435c9438c1b3dc3ad5b5709a379bf4312bd708",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-11-03T14:23:05Z",
    "title_canon_sha256": "abd6ef1baefba204ce04057e81b249b61a8c07edae725f262aae0c1330606f9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0582",
    "kind": "arxiv",
    "version": 1
  }
}