Pith Number

pith:IIQK3V5K

pith:2009:IIQK3V5KBVB7A3EJ2MSGVXV56Z

not attested not anchored not stored refs pending

PROSAC: A Submillimeter Array survey of low-mass protostars. II. The mass evolution of envelopes, disks, and stars from the Class 0 through I stages

Dave Lommen, David J. Wilner, Ewine F. van Dishoeck, Jes K. Jorgensen, Michiel R. Hogerheijde, Philip C. Myers, Ruud Visser, Tyler L. Bourke

arxiv:0909.3386 v1 · 2009-09-18 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IIQK3V5KBVB7A3EJ2MSGVXV56Z}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:11:46.569607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4220add7aa0d43f06c89d3246adebdf6461d5d804b024502f44abca59a67d663

Aliases

arxiv: 0909.3386 · arxiv_version: 0909.3386v1 · doi: 10.48550/arxiv.0909.3386 · pith_short_12: IIQK3V5KBVB7 · pith_short_16: IIQK3V5KBVB7A3EJ · pith_short_8: IIQK3V5K

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/IIQK3V5KBVB7A3EJ2MSGVXV56Z \
  | 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: 4220add7aa0d43f06c89d3246adebdf6461d5d804b024502f44abca59a67d663

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "636fc75db0260f12d19993e29d4610562717bd5c9da25c1945636dc7271a6fb0",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-18T08:40:38Z",
    "title_canon_sha256": "159e6486a424fddb21280a6b0c86738e32f8dad033f2190c53e9545b2553ff3b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3386",
    "kind": "arxiv",
    "version": 1
  }
}