Pith Number

pith:JEMW2H6U

pith:2009:JEMW2H6UEPUZHLG4XRC3SCQPHM

not attested not anchored not stored refs pending

Molecular Line Profiles of Collapsing Gas Clouds

Kinwah Wu, Yang Gao, Yu-Qing Lou

arxiv:0908.0978 v1 · 2009-08-07 · astro-ph.SR · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JEMW2H6UEPUZHLG4XRC3SCQPHM}

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	2026-05-18T02:12:36.817824Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

49196d1fd423e993acdcbc45b90a0f3b1139421ff80cf0aee2d6c3c81d31bbcd

Aliases

arxiv: 0908.0978 · arxiv_version: 0908.0978v1 · doi: 10.48550/arxiv.0908.0978 · pith_short_12: JEMW2H6UEPUZ · pith_short_16: JEMW2H6UEPUZHLG4 · pith_short_8: JEMW2H6U

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/JEMW2H6UEPUZHLG4XRC3SCQPHM \
  | 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: 49196d1fd423e993acdcbc45b90a0f3b1139421ff80cf0aee2d6c3c81d31bbcd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d7df4e89ae95ec08d4b7e1cd29200185f81b72a35904f2ab45c8ff564ab09a6",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-08-07T03:20:39Z",
    "title_canon_sha256": "263bd193da07ac3adb953cc91c3519d773023f04f164029039814a7a704e3b6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.0978",
    "kind": "arxiv",
    "version": 1
  }
}