Pith Number

pith:HAQGJHIW

pith:2025:HAQGJHIWKBF6NKKRGS4TMXYEAF

not attested not anchored not stored refs pending

Azimuthal offsets in spiral arms of nearby galaxies

Adam K. Leroy, Alessandro Razza, Annie Hughes, Antonio Usero, Chris Faesi, Daizhong Liu, Damian R. Gleis, Daniel A. Dale, Dario Colombo, Eric Emsellem, Eric W. Koch, Eva Schinnerer, Francesca Pinna, Hsi-An Pan, Jiayi Sun, Justus Neumann, Kathryn Grasha, Kathryn Kreckel, Mallory Thorp, Mar\'ia J. Jim\'enez-Donaire, Marina Ruiz-Garc\'ia, M\'ed\'eric Boquien, Miguel Querejeta, Ralf S. Klessen, Rowan Smith, Santiago Garc\'ia-Burillo, Sharon E. Meidt, Sophia Stuber, Thomas G. Williams, Toshiki Saito, Yixian Cao

arxiv:2509.01668 v1 · 2025-09-01 · 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{HAQGJHIWKBF6NKKRGS4TMXYEAF}

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	2026-07-05T12:03:05.765774Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3820649d16504be6a95134b9365f04016844765923e691f8f901c46c00a7ccd3

Aliases

arxiv: 2509.01668 · arxiv_version: 2509.01668v1 · doi: 10.48550/arxiv.2509.01668 · pith_short_12: HAQGJHIWKBF6 · pith_short_16: HAQGJHIWKBF6NKKR · pith_short_8: HAQGJHIW

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/HAQGJHIWKBF6NKKRGS4TMXYEAF \
  | 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: 3820649d16504be6a95134b9365f04016844765923e691f8f901c46c00a7ccd3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a139731c1fe8d6c48806d4ae92bbcdcd89dc4b750463bbd833545d69f7ef1a5e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-09-01T18:00:01Z",
    "title_canon_sha256": "765159bcbcfd50ea09e36da078c17a4e3b97bc47bc85bc1768fb01c536853e38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.01668",
    "kind": "arxiv",
    "version": 1
  }
}