Pith Number

pith:XLPQAYFA

pith:2012:XLPQAYFADQ7TWSSIZ42EMFSLZD

not attested not anchored not stored refs pending

Plain fundamentals of Fundamental Planes: Analytics and algorithms

Mariangela Bernardi (UPenn), Ravi K. Sheth (ICTP, UPenn)

arxiv:1202.3438 v1 · 2012-02-15 · 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{XLPQAYFADQ7TWSSIZ42EMFSLZD}

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	2026-05-18T01:58:27.883684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

badf0060a01c3f3b4a48cf3446164bc8d6113627d85bbc13251f1bec738c3552

Aliases

arxiv: 1202.3438 · arxiv_version: 1202.3438v1 · doi: 10.48550/arxiv.1202.3438 · pith_short_12: XLPQAYFADQ7T · pith_short_16: XLPQAYFADQ7TWSSI · pith_short_8: XLPQAYFA

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/XLPQAYFADQ7TWSSIZ42EMFSLZD \
  | 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: badf0060a01c3f3b4a48cf3446164bc8d6113627d85bbc13251f1bec738c3552

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aea42349927d50219c74d9fe23efd27ba5a932c9dceb75b9519e9e7adee144a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-02-15T21:00:05Z",
    "title_canon_sha256": "4cd0ec67b9eaf9f37fb5c809b964fc242d3bbc69619817fc274c2fd82367a11d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.3438",
    "kind": "arxiv",
    "version": 1
  }
}