Pith Number

pith:Q4NL5ZMC

pith:2009:Q4NL5ZMCTUH5PIFUUMCSBOUNT2

not attested not anchored not stored refs pending

Clumps in the Outer Disk by Disk Instability: Why They are Initially Gas Giants and the Legacy of Disruption

Aaron C. Boley, Lucio Mayer, Richard H. Durisen, Tristen Hayfield

arxiv:0909.4543 v2 · 2009-09-24 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q4NL5ZMCTUH5PIFUUMCSBOUNT2}

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	2026-05-18T02:11:37.892797Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

871abee5829d0fd7a0b4a30520ba8d9eb9e45e4751b4fa971ef80879ced7f718

Aliases

arxiv: 0909.4543 · arxiv_version: 0909.4543v2 · doi: 10.48550/arxiv.0909.4543 · pith_short_12: Q4NL5ZMCTUH5 · pith_short_16: Q4NL5ZMCTUH5PIFU · pith_short_8: Q4NL5ZMC

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/Q4NL5ZMCTUH5PIFUUMCSBOUNT2 \
  | 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: 871abee5829d0fd7a0b4a30520ba8d9eb9e45e4751b4fa971ef80879ced7f718

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "219ad3109c08035e63fb0bca287823715a718cc0516e2dfbbb21105ee050a667",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-09-24T20:35:25Z",
    "title_canon_sha256": "0671898dabbce1e05c5317f7c80f3329713be481f346d56050f80abe14a57d16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4543",
    "kind": "arxiv",
    "version": 2
  }
}