Pith Number

pith:GGOFFEJH

pith:2012:GGOFFEJHXDGRR275HSHNV637YH

not attested not anchored not stored refs pending

Measurement of Galactic Logarithmic Spiral Arm Pitch Angle Using Two-Dimensional Fast Fourier Transform Decomposition

(2) University of Arkansas, (3) Instituto Nacional de Astrof\'isica, Benjamin L. Davis (1), Claud H. S. Lacy (1), Daniel Kennefick (1), Douglas W. Shields (1), Fayetteville, Iv\^anio Puerari (3) ((1) University of Arkansas, Joel C. Berrier (1), Julia Kennefick (1), Little Rock, Marc S. Seigar (2), Optica y Electr\'onica)

arxiv:1202.4780 v3 · 2012-02-21 · 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{GGOFFEJHXDGRR275HSHNV637YH}

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	2026-05-18T03:54:47.627901Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

319c529127b8cd18ebfd3c8edafb7fc1f10b05da0bc9ca1527a39a3c8db58297

Aliases

arxiv: 1202.4780 · arxiv_version: 1202.4780v3 · doi: 10.48550/arxiv.1202.4780 · pith_short_12: GGOFFEJHXDGR · pith_short_16: GGOFFEJHXDGRR275 · pith_short_8: GGOFFEJH

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/GGOFFEJHXDGRR275HSHNV637YH \
  | 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: 319c529127b8cd18ebfd3c8edafb7fc1f10b05da0bc9ca1527a39a3c8db58297

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5873e1f3b846e2b1a2a0a35e5c8c979ea28e70b52addf7585c8ede59f17f1f60",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-02-21T22:16:45Z",
    "title_canon_sha256": "f20d7a3db6b42d6ae409db7b3d2f1c9c8def9fe66b4e094ae62f25895530e558"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.4780",
    "kind": "arxiv",
    "version": 3
  }
}