Pith Number

pith:5345YB3M

pith:2012:5345YB3MB4SVG6GYNSKEYELP2I

not attested not anchored not stored refs pending

Newtonian acceleration scales in spiral galaxies

A. Del Popolo, V. F. Cardone

arxiv:1209.1524 v1 · 2012-09-07 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5345YB3MB4SVG6GYNSKEYELP2I}

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	2026-05-18T03:00:26.914842Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eef9dc076c0f255378d86c944c116fd21bdfc63cf8d0d88035eb601aa2ba4f35

Aliases

arxiv: 1209.1524 · arxiv_version: 1209.1524v1 · doi: 10.48550/arxiv.1209.1524 · pith_short_12: 5345YB3MB4SV · pith_short_16: 5345YB3MB4SVG6GY · pith_short_8: 5345YB3M

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/5345YB3MB4SVG6GYNSKEYELP2I \
  | 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: eef9dc076c0f255378d86c944c116fd21bdfc63cf8d0d88035eb601aa2ba4f35

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f6b6613a29e054f1e3bfb3a19fcd75094ef4b94a529d31bccdcae1abab8409e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-09-07T13:02:31Z",
    "title_canon_sha256": "ec381a9a59f112590b749ba2af580a87e541552b294919f1a92faac2b16a7fb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.1524",
    "kind": "arxiv",
    "version": 1
  }
}