Pith Number

pith:Y7PVIECT

pith:2011:Y7PVIECTT5BR2RVF4NG42XNEBK

not attested not anchored not stored refs pending

Investigating the nuclear activity of barred spiral galaxies: the case of NGC 1672

A. J. Levan, A. Zezas, B. Koribalski, E. J. M. Colbert, K. D. Kuntz, L. P. Jenkins, M. J. Ward, R. Ojha, T. P. Roberts, W. N. Brandt

arxiv:1104.1649 v1 · 2011-04-08 · 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{Y7PVIECTT5BR2RVF4NG42XNEBK}

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	2026-05-18T02:02:36.074268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7df5410539f431d46a5e34dcd5da40a8611d2d6546bf13123bba95c3f6a146a

Aliases

arxiv: 1104.1649 · arxiv_version: 1104.1649v1 · doi: 10.48550/arxiv.1104.1649 · pith_short_12: Y7PVIECTT5BR · pith_short_16: Y7PVIECTT5BR2RVF · pith_short_8: Y7PVIECT

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/Y7PVIECTT5BR2RVF4NG42XNEBK \
  | 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: c7df5410539f431d46a5e34dcd5da40a8611d2d6546bf13123bba95c3f6a146a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9160f4ea58bd46b9eaa4402271b2ff78632562246437e1df76a217ec03e23976",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-04-08T20:54:18Z",
    "title_canon_sha256": "48df47dbf88de244baa1e3e3c11824524427dcf7bf0126f1213f6bcc49f90398"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.1649",
    "kind": "arxiv",
    "version": 1
  }
}