Pith Number

pith:H7KNQZVF

pith:1998:H7KNQZVFQHG5MCWER6N5XEGOU4

not attested not anchored not stored refs pending

Molecular Gas in Mrk 109: Constraining the O2/CO Ratio in Chemically Young Galaxies

A. Sievers, D. T. Frayer, E. R. Seaquist, T. X. Thuan

arxiv:astro-ph/9803147 v1 · 1998-03-12 · 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{H7KNQZVFQHG5MCWER6N5XEGOU4}

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	2026-05-18T01:07:37.738970Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3fd4d866a581cdd60ac48f9bdb90cea71629b5d06c6eacea1dfc3585ff0c3cea

Aliases

arxiv: astro-ph/9803147 · arxiv_version: astro-ph/9803147v1 · doi: 10.48550/arxiv.astro-ph/9803147 · pith_short_12: H7KNQZVFQHG5 · pith_short_16: H7KNQZVFQHG5MCWE · pith_short_8: H7KNQZVF

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/H7KNQZVFQHG5MCWER6N5XEGOU4 \
  | 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: 3fd4d866a581cdd60ac48f9bdb90cea71629b5d06c6eacea1dfc3585ff0c3cea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7e5533cbd3ec1c1767f758059620ff9dff990f9fc1821c5b15fd5519dad69c7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-03-12T20:49:14Z",
    "title_canon_sha256": "0ce06e1769f53a6f7554f6902f601cb2463b19f5b113f9f36cfdd4d1599dbf3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9803147",
    "kind": "arxiv",
    "version": 1
  }
}