Pith Number

pith:SCN6OBA6

pith:2009:SCN6OBA66HWWKOHJBD7J2SQZZN

not attested not anchored not stored refs pending

The Runts of the Litter: Why planets formed through gravitational instability can only be failed binary stars

((1) University of Toronto, (2) CfA, (3) CITA), Andrew N. Youdin (3), Kaitlin M. Kratter (1), Ruth A. Murray-Clay (2)

arxiv:0909.2644 v2 · 2009-09-15 · astro-ph.EP · 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{SCN6OBA66HWWKOHJBD7J2SQZZN}

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	2026-05-18T02:34:30.090354Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

909be7041ef1ed6538e908fe9d4a19cb5148994fa1a00f04142119e02114163a

Aliases

arxiv: 0909.2644 · arxiv_version: 0909.2644v2 · doi: 10.48550/arxiv.0909.2644 · pith_short_12: SCN6OBA66HWW · pith_short_16: SCN6OBA66HWWKOHJ · pith_short_8: SCN6OBA6

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/SCN6OBA66HWWKOHJBD7J2SQZZN \
  | 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: 909be7041ef1ed6538e908fe9d4a19cb5148994fa1a00f04142119e02114163a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e863d2f094d0e1d1b8d4fba836ab9b63086d482292216cbdad934381c711b64",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-09-15T17:52:27Z",
    "title_canon_sha256": "206b13ce41988c2206b66f599995ff9b1dc1143890620e4fea8145ffd2c1165b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.2644",
    "kind": "arxiv",
    "version": 2
  }
}