Pith Number

pith:K3PPVW4J

pith:2009:K3PPVW4JWF4NZWOVSY2JHQ4JY3

not attested not anchored not stored refs pending

Global disk model for galaxies NGC 1365, NGC 6946, NGC 7793, UGC 6446

Joanna Ja{\l}ocha, {\L}ukasz Bratek, Marek Kutschera, Piotr Skindzier

arxiv:0906.4448 v3 · 2009-06-24 · 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{K3PPVW4JWF4NZWOVSY2JHQ4JY3}

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	2026-05-18T04:23:34.432375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

56defadb89b178dcd9d5963493c389c6dcb0fee7364c1fa4e45e16a77929453e

Aliases

arxiv: 0906.4448 · arxiv_version: 0906.4448v3 · doi: 10.48550/arxiv.0906.4448 · pith_short_12: K3PPVW4JWF4N · pith_short_16: K3PPVW4JWF4NZWOV · pith_short_8: K3PPVW4J

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/K3PPVW4JWF4NZWOVSY2JHQ4JY3 \
  | 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: 56defadb89b178dcd9d5963493c389c6dcb0fee7364c1fa4e45e16a77929453e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d83b821b1844d98908d57917260a2ee646105532445b5770049b3b006f86946",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-06-24T11:37:23Z",
    "title_canon_sha256": "ed293a37ad818673ddcb9cdff5efc7c9cb37fd12c12a21e9c469902014a49415"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.4448",
    "kind": "arxiv",
    "version": 3
  }
}