Pith Number

pith:WDDNBFO4

pith:2012:WDDNBFO4W4SVCT4TEDNH6LHSBZ

not attested not anchored not stored refs pending

From dust to planetesimals: an improved model for collisional growth in protoplanetary disks

Christoph Olczak, Farzana Meru, Marina Galvagni, Pascale Garaud

arxiv:1209.0013 v3 · 2012-08-31 · 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{WDDNBFO4W4SVCT4TEDNH6LHSBZ}

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	2026-05-18T01:54:48.813825Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0c6d095dcb725514f9320da7f2cf20e5aeaf64ca890184e43faacc21fc959d3

Aliases

arxiv: 1209.0013 · arxiv_version: 1209.0013v3 · doi: 10.48550/arxiv.1209.0013 · pith_short_12: WDDNBFO4W4SV · pith_short_16: WDDNBFO4W4SVCT4T · pith_short_8: WDDNBFO4

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/WDDNBFO4W4SVCT4TEDNH6LHSBZ \
  | 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: b0c6d095dcb725514f9320da7f2cf20e5aeaf64ca890184e43faacc21fc959d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "796788403335afa48d990cd9f188ae24c21c4fdd3f047596b108d90945ee3cff",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-08-31T20:41:35Z",
    "title_canon_sha256": "cf189d9b27da6ebddfa10f2151949eafe15c216b8a8594814a603251593ff849"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.0013",
    "kind": "arxiv",
    "version": 3
  }
}