Pith Number

pith:QRBFK2CG

pith:2009:QRBFK2CGVCKKWWWXQ7WJ5F75K5

not attested not anchored not stored refs pending

Investigation of the interaction of some astrobiological molecules with the surface of a graphite (0001) substrate. Application to the CO, HCN, H2O and H2CO molecules

Azzedine Lakhlifi, John P. Killingbeck

arxiv:0906.4020 v1 · 2009-06-22 · physics.chem-ph · physics.bio-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{QRBFK2CGVCKKWWWXQ7WJ5F75K5}

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	2026-05-18T02:13:13.452116Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8442556846a894ab5ad787ec9e97fd5748051b1956795006154bac4b35dc9650

Aliases

arxiv: 0906.4020 · arxiv_version: 0906.4020v1 · doi: 10.48550/arxiv.0906.4020 · pith_short_12: QRBFK2CGVCKK · pith_short_16: QRBFK2CGVCKKWWWX · pith_short_8: QRBFK2CG

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/QRBFK2CGVCKKWWWXQ7WJ5F75K5 \
  | 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: 8442556846a894ab5ad787ec9e97fd5748051b1956795006154bac4b35dc9650

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "996c03e7de393e8b72433c2ba91c1dc80e6633b0feb60e5ddfcda70dd097b1f5",
    "cross_cats_sorted": [
      "physics.bio-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2009-06-22T14:30:30Z",
    "title_canon_sha256": "02c11aa40773d7d178c740374043f8c88005750148bf9b88805ce131582fbd5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.4020",
    "kind": "arxiv",
    "version": 1
  }
}