Pith Number

pith:7YVZTRVD

pith:2025:7YVZTRVD5ET5Y2K72ABLUK3DG6

not attested not anchored not stored refs pending

Dust growth and planet formation by disc fragmentation

Hans Lee, Richard A. Booth, Sergei Nayakshin

arxiv:2509.09305 v1 · 2025-09-11 · 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{7YVZTRVD5ET5Y2K72ABLUK3DG6}

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	2026-07-05T12:09:33.638912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe2b99c6a3e927dc695fd002ba2b6337b0ffd9127641ad7ea6fa5d3bfc9915c1

Aliases

arxiv: 2509.09305 · arxiv_version: 2509.09305v1 · doi: 10.48550/arxiv.2509.09305 · pith_short_12: 7YVZTRVD5ET5 · pith_short_16: 7YVZTRVD5ET5Y2K7 · pith_short_8: 7YVZTRVD

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/7YVZTRVD5ET5Y2K72ABLUK3DG6 \
  | 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: fe2b99c6a3e927dc695fd002ba2b6337b0ffd9127641ad7ea6fa5d3bfc9915c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "951a458c47f574080e257de208f7f753b155c6d244b1b5f0b08deb3f4083493f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2025-09-11T09:45:48Z",
    "title_canon_sha256": "69978a4c8862d39c3f0911f1f8952b0c369758fbdfc61f6838b2c47abe8a4842"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.09305",
    "kind": "arxiv",
    "version": 1
  }
}