Pith Number

pith:YMTJLI2W

pith:2015:YMTJLI2W7FNSMN7VGJLQQT5DGG

not attested not anchored not stored refs pending

Towards a new classification of galaxies: principal component analysis of CALIFA circular velocity curves

Adriana de Lorenzo-C\'aceres, Cristina Catal\'an-Torrecilla, Dario Colombo, Erik Rosolowsky, Estrella Florido, Jairo M\'endez-Abreu, Joss Bland-Hawthorn, Keiichi Kodaira, Laura S\'anchez-Menguiano, Llu\'is Galbany, Luca Costantin, Raffaella A. Marino, Rahul Kannan, Ronald L\"asker, Rosa Gonz\'alez Delgado, Rub\'en Garc\'ia-Benito, Sebastian F. S\'anchez, Tom\'as Ruiz-Lara, Veselina Kalinova

arxiv:1509.03352 v4 · 2015-09-10 · astro-ph.GA · astro-ph.CO

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

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	2026-05-18T00:43:13.546203Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c32695a356f95b2637f53257084fa331905e8e21fd02c06421320bb2e9d76dd2

Aliases

arxiv: 1509.03352 · arxiv_version: 1509.03352v4 · doi: 10.48550/arxiv.1509.03352 · pith_short_12: YMTJLI2W7FNS · pith_short_16: YMTJLI2W7FNSMN7V · pith_short_8: YMTJLI2W

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/YMTJLI2W7FNSMN7VGJLQQT5DGG \
  | 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: c32695a356f95b2637f53257084fa331905e8e21fd02c06421320bb2e9d76dd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0a57642472a165607e89aeb68058ec209147aef518ec8ee6eafee94ae078f58",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-10T22:21:00Z",
    "title_canon_sha256": "6097aa7ec0507c29d967b4399c33925c1b409846c311127226beab7fd2779b01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.03352",
    "kind": "arxiv",
    "version": 4
  }
}