Pith Number

pith:2WRORJAW

pith:2009:2WRORJAWZADGFFBRG4Z65O4UEB

not attested not anchored not stored refs pending

Long-lived planetesimal discs

Kevin Heng, Scott Tremaine

arxiv:0909.3850 v3 · 2009-09-21 · astro-ph.EP · 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{2WRORJAWZADGFFBRG4Z65O4UEB}

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	2026-05-18T02:11:45.631456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5a2e8a416c8066294313733eebb94207d5d5157509faf654d065378208d7464

Aliases

arxiv: 0909.3850 · arxiv_version: 0909.3850v3 · doi: 10.48550/arxiv.0909.3850 · pith_short_12: 2WRORJAWZADG · pith_short_16: 2WRORJAWZADGFFBR · pith_short_8: 2WRORJAW

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/2WRORJAWZADGFFBRG4Z65O4UEB \
  | 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: d5a2e8a416c8066294313733eebb94207d5d5157509faf654d065378208d7464

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36603127ddfe8c6a85eae9f528571a0d52babdfe84bc94a4a5238004b2b3907a",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-09-21T20:00:32Z",
    "title_canon_sha256": "94dc0635f7742ea027c01fa3ea419803485b1affae824b1b08c93a2438128da0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3850",
    "kind": "arxiv",
    "version": 3
  }
}