Pith Number

pith:QDZMWJND

pith:2009:QDZMWJNDVQ6GXJZUTCSO2PN2AR

not attested not anchored not stored refs pending

What cluster gas expulsion can tell us about star formation, cluster environment and galaxy evolution

Belgium), Bonn, Genevieve Parmentier (AIfA, Germany; IAGL, Liege

arxiv:0901.3140 v1 · 2009-01-20 · astro-ph.CO · 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{QDZMWJNDVQ6GXJZUTCSO2PN2AR}

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	2026-05-18T01:55:40.015512Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80f2cb25a3ac3c6ba73498a4ed3dba046687c1e1097668170be6d579be49e141

Aliases

arxiv: 0901.3140 · arxiv_version: 0901.3140v1 · doi: 10.48550/arxiv.0901.3140 · pith_short_12: QDZMWJNDVQ6G · pith_short_16: QDZMWJNDVQ6GXJZU · pith_short_8: QDZMWJND

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/QDZMWJNDVQ6GXJZUTCSO2PN2AR \
  | 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: 80f2cb25a3ac3c6ba73498a4ed3dba046687c1e1097668170be6d579be49e141

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9d22efb1cb95c4c3d0f3df1b3c2bb78ee3e8b5053c8b8504976bc6c6286b643",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-01-20T21:00:05Z",
    "title_canon_sha256": "07a8914f5984ed36aee9300e5e3d1cd85d9a33eb3cc7d0860256283d0090b25a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.3140",
    "kind": "arxiv",
    "version": 1
  }
}