Pith Number

pith:4RY2ZZA2

pith:2009:4RY2ZZA234LPDPTK3LCYSKFHSK

not attested not anchored not stored refs pending

HI Distribution and Tully-Fisher Distances of Gas-Poor Spiral Galaxies in the Virgo Cluster Region

J.M. Solanes, M.C. Toribio

arxiv:0909.3615 v1 · 2009-09-21 · 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{4RY2ZZA234LPDPTK3LCYSKFHSK}

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	2026-05-18T02:11:46.087105Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e471ace41adf16f1be6adac58928a792a60a62e5204da48c0dc79bf3d1b1046a

Aliases

arxiv: 0909.3615 · arxiv_version: 0909.3615v1 · doi: 10.48550/arxiv.0909.3615 · pith_short_12: 4RY2ZZA234LP · pith_short_16: 4RY2ZZA234LPDPTK · pith_short_8: 4RY2ZZA2

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/4RY2ZZA234LPDPTK3LCYSKFHSK \
  | 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: e471ace41adf16f1be6adac58928a792a60a62e5204da48c0dc79bf3d1b1046a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a76394d121a12eb7d1068f64a0e818439ac31178ef81f6ddfee75d379b987cc3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-21T13:47:09Z",
    "title_canon_sha256": "178bda28bb14a4192519e04cfd3d0084418749a2ffd4719ebf22a40eb36260c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3615",
    "kind": "arxiv",
    "version": 1
  }
}