Pith Number

pith:RRRPKJX5

pith:2012:RRRPKJX5S25N5GTBSBNTWSM3OM

not attested not anchored not stored refs pending

Characterising galaxy groups: spectroscopic observations of the Shakhbazyan sample

(1, 2, (2) Astrophysics Research Institute - Liverpool John Moores University, 3), (3) Dipartimento di Scienze Fisiche - Universit\`a di Napoli Federico II, 4, (4) INAF - Astronomical Observatory of Naples, 5), (5) INFN - Napoli Unit, 6), (6) Dipartimento di Fisica e Astronomia, 7) ((1) Institute of Cosmology, (7) Visiting associate - California Institute of Technology, Dept. of Physical Sciences, Diego Capozzi, Elisabetta De Filippis (3, Giuseppe Longo (3, Gravitation - University of Portsmouth, Marilena Spavone (3, Maurizio Paolillo (3, Pasadena), Silvio Barbati (3), Universit\`a di Padova

arxiv:1207.7075 v2 · 2012-07-30 · 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{RRRPKJX5S25N5GTBSBNTWSM3OM}

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	2026-05-18T01:56:00.999241Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c62f526fd96bade9a61905b3b499b7325436cf01f3d26a60f81f23c7becfa4a

Aliases

arxiv: 1207.7075 · arxiv_version: 1207.7075v2 · doi: 10.48550/arxiv.1207.7075 · pith_short_12: RRRPKJX5S25N · pith_short_16: RRRPKJX5S25N5GTB · pith_short_8: RRRPKJX5

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/RRRPKJX5S25N5GTBSBNTWSM3OM \
  | 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: 8c62f526fd96bade9a61905b3b499b7325436cf01f3d26a60f81f23c7becfa4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f63842a35cb516ecaa1851ee8c5643a49746d5c8f4975d42e89c7abc5c6d4266",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-07-30T20:00:03Z",
    "title_canon_sha256": "3e862f62d07761c02c8eb03de71e82af1f93676ef946642bc6baac177d2f5eb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.7075",
    "kind": "arxiv",
    "version": 2
  }
}