Pith Number

pith:OHTMCU3S

pith:2002:OHTMCU3S7MF2OX6THDFKTPDNES

not attested not anchored not stored refs pending

N2H+ and C18O Depletion in a Cold Dark Cloud

Charles J. Lada, Edwin A. Bergin, Joao Alves, Tracy L. Huard

arxiv:astro-ph/0204016 v1 · 2002-04-01 · astro-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{OHTMCU3S7MF2OX6THDFKTPDNES}

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	2026-05-18T04:23:01.217778Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71e6c15372fb0ba75fd338caa9bc6d24adf244096fe1a273acbf0ac6dc300086

Aliases

arxiv: astro-ph/0204016 · arxiv_version: astro-ph/0204016v1 · doi: 10.48550/arxiv.astro-ph/0204016 · pith_short_12: OHTMCU3S7MF2 · pith_short_16: OHTMCU3S7MF2OX6T · pith_short_8: OHTMCU3S

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/OHTMCU3S7MF2OX6THDFKTPDNES \
  | 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: 71e6c15372fb0ba75fd338caa9bc6d24adf244096fe1a273acbf0ac6dc300086

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6a4d91ba267b7508ac5c4c63cd75098140496902112f6b16858a0828ea7aa4a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-04-01T15:36:57Z",
    "title_canon_sha256": "c1d1a785258b0e12e3b64a0be43da9e9386415c2e8e55f099f2550506f83594a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0204016",
    "kind": "arxiv",
    "version": 1
  }
}