Pith Number

pith:CQHTKLYW

pith:2004:CQHTKLYWOPJ5JJPXJI6GWSBEFY

not attested not anchored not stored refs pending

Methane Abundance Variations toward the Massive Protostar NGC 7538 : IRS9

A. C. A. Boogert, G. A. Blake, K. Oberg (Caltech)

arxiv:astro-ph/0407270 v1 · 2004-07-13 · 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{CQHTKLYWOPJ5JJPXJI6GWSBEFY}

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	2026-05-18T01:07:32.356363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

140f352f1673d3d4a5f74a3c6b48242e3056c4b402901170d77c082d4da3e211

Aliases

arxiv: astro-ph/0407270 · arxiv_version: astro-ph/0407270v1 · doi: 10.48550/arxiv.astro-ph/0407270 · pith_short_12: CQHTKLYWOPJ5 · pith_short_16: CQHTKLYWOPJ5JJPX · pith_short_8: CQHTKLYW

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/CQHTKLYWOPJ5JJPXJI6GWSBEFY \
  | 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: 140f352f1673d3d4a5f74a3c6b48242e3056c4b402901170d77c082d4da3e211

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10cbce769d4e8f89480b5c9a813e5805596f2f801f176c52727664e576d691c7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-07-13T20:02:24Z",
    "title_canon_sha256": "2246e5300ebed6bcd49c65d51761c26641cf3d55274da49056c70c109845d38e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0407270",
    "kind": "arxiv",
    "version": 1
  }
}