Pith Number

pith:ZVOM7U4G

pith:2026:ZVOM7U4GC5LJCKOEUAIDT7OZUV

not attested not anchored not stored refs pending

UCLCHEM 4.0: An open source gas-grain astrochemistry simulation framework

Felix D. Priestley, Gijs Vermari\"en, Katarzyna M. Dutkowska, Le Ngoc Tram, Marcus Keil, Serena Viti, Tobias M. Dijkhuis

arxiv:2606.20265 v1 · 2026-06-18 · astro-ph.GA · 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{ZVOM7U4GC5LJCKOEUAIDT7OZUV}

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	2026-06-19T16:13:07.281141Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd5ccfd38617569129c4a01039fdd9a57eff9427b83a6f5d4bf3ac410da1dedd

Aliases

arxiv: 2606.20265 · arxiv_version: 2606.20265v1 · doi: 10.48550/arxiv.2606.20265 · pith_short_12: ZVOM7U4GC5LJ · pith_short_16: ZVOM7U4GC5LJCKOE · pith_short_8: ZVOM7U4G

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/ZVOM7U4GC5LJCKOEUAIDT7OZUV \
  | 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: cd5ccfd38617569129c4a01039fdd9a57eff9427b83a6f5d4bf3ac410da1dedd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da81e4e802fa0b03f3d909c20ad0c76138589ca8ae842f80b5598381ab6bcd4d",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-06-18T14:13:18Z",
    "title_canon_sha256": "06d0b51c427f024d26e309ed25d07fa0643cecbfd54212c20188cc7b3a687b43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.20265",
    "kind": "arxiv",
    "version": 1
  }
}