Pith Number

pith:6UCLUSTO

pith:2009:6UCLUSTOZ3I3LWMZTC6VFEXXE7

not attested not anchored not stored refs pending

Limits on the location of planetesimal formation in self-gravitating protostellar discs

C. Clarke, G. Lodato

arxiv:0906.1017 v1 · 2009-06-04 · astro-ph.SR · 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{6UCLUSTOZ3I3LWMZTC6VFEXXE7}

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	2026-05-18T02:13:28.904632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f504ba4a6eced1b5d99998bd5292f727dcdb08808df6a2a39335bf1dc5953830

Aliases

arxiv: 0906.1017 · arxiv_version: 0906.1017v1 · doi: 10.48550/arxiv.0906.1017 · pith_short_12: 6UCLUSTOZ3I3 · pith_short_16: 6UCLUSTOZ3I3LWMZ · pith_short_8: 6UCLUSTO

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/6UCLUSTOZ3I3LWMZTC6VFEXXE7 \
  | 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: f504ba4a6eced1b5d99998bd5292f727dcdb08808df6a2a39335bf1dc5953830

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca7a6e3b2a55ba3dfc4b35b4213dc895bac447653ca14fe8220c5dd800ed4ed3",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-06-04T22:49:08Z",
    "title_canon_sha256": "66d60844bf512d550eee28ebfa93706f743e912ef54478eee56c3c05f2f37ec7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.1017",
    "kind": "arxiv",
    "version": 1
  }
}