Pith Number

pith:SUUFRGX4

pith:2009:SUUFRGX4TNRTDXDPW2UUWTIKXR

not attested not anchored not stored refs pending

Density Profiles in Molecular Cloud Cores Associated with High-Mass Star-Forming Regions

Lev E. Pirogov

arxiv:0911.4421 v1 · 2009-11-23 · 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{SUUFRGX4TNRTDXDPW2UUWTIKXR}

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	2026-05-18T02:34:04.000426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9528589afc9b6331dc6fb6a94b4d0abc44d6c677e7fa597ce46bc4e2b77f7a79

Aliases

arxiv: 0911.4421 · arxiv_version: 0911.4421v1 · doi: 10.48550/arxiv.0911.4421 · pith_short_12: SUUFRGX4TNRT · pith_short_16: SUUFRGX4TNRTDXDP · pith_short_8: SUUFRGX4

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/SUUFRGX4TNRTDXDPW2UUWTIKXR \
  | 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: 9528589afc9b6331dc6fb6a94b4d0abc44d6c677e7fa597ce46bc4e2b77f7a79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7505b4340f9b37563c5d829b1087d76beb66e5f964e9b2b45378680b52b30b1b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-11-23T13:51:56Z",
    "title_canon_sha256": "9afe0bbf9f1f9ce09beef2c807779aa1feb76118c18656d21df8a95529de4532"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.4421",
    "kind": "arxiv",
    "version": 1
  }
}