Pith Number

pith:H4HSCYHK

pith:2009:H4HSCYHKYVEMO3QIEEOUXJILIF

not attested not anchored not stored refs pending

Probing the evolution of molecular cloud structure: From quiescence to birth

(2) University of Calgary), H. Beuther (1), J. Kainulainen (1), R. Plume (2) ((1) Max-Planck-Institute for Astronomy, T. Henning (1)

arxiv:0911.5648 v1 · 2009-11-30 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H4HSCYHKYVEMO3QIEEOUXJILIF}

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	2026-05-18T02:10:35.572738Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f0f2160eac548c76e08211d4ba50b4173f9f1de3c80cfd1bdc2b36d199917d8

Aliases

arxiv: 0911.5648 · arxiv_version: 0911.5648v1 · doi: 10.48550/arxiv.0911.5648 · pith_short_12: H4HSCYHKYVEM · pith_short_16: H4HSCYHKYVEMO3QI · pith_short_8: H4HSCYHK

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/H4HSCYHKYVEMO3QIEEOUXJILIF \
  | 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: 3f0f2160eac548c76e08211d4ba50b4173f9f1de3c80cfd1bdc2b36d199917d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ccc1065a61ec07cb671dd67f3228c3376084abdc4c83d64ca6405a4972c0278",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-11-30T14:14:26Z",
    "title_canon_sha256": "ffa33136a3fb996dc64579813d548acafb6a3659707abd4c515a1aa5247b7d95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.5648",
    "kind": "arxiv",
    "version": 1
  }
}