Pith Number

pith:YKZ25TPZ

pith:2011:YKZ25TPZNI3EUSKJT6SPIDOQWY

not attested not anchored not stored refs pending

XMM-Newton/SDSS: star formation efficiency in galaxy clusters and constraints on the matter density parameter

Peter Schneider, Tatiana F. Lagana, Thomas H. Reiprich, Yu-Ying Zhang

arxiv:1108.3678 v4 · 2011-08-18 · 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{YKZ25TPZNI3EUSKJT6SPIDOQWY}

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	2026-05-18T04:07:53.868322Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2b3aecdf96a364a49499fa4f40dd0b6138ac4802acca7420f03ffbab83ee969

Aliases

arxiv: 1108.3678 · arxiv_version: 1108.3678v4 · doi: 10.48550/arxiv.1108.3678 · pith_short_12: YKZ25TPZNI3E · pith_short_16: YKZ25TPZNI3EUSKJ · pith_short_8: YKZ25TPZ

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/YKZ25TPZNI3EUSKJT6SPIDOQWY \
  | 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: c2b3aecdf96a364a49499fa4f40dd0b6138ac4802acca7420f03ffbab83ee969

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0ca5347aad727fb30576ed2ea580a3c26b61c74681b5ccf459d708b5e2d6dab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-18T08:18:53Z",
    "title_canon_sha256": "9dde5469265cf356c522834431c4560160a83ad1d88c177ddec3fd21960ef37e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3678",
    "kind": "arxiv",
    "version": 4
  }
}