Pith Number

pith:6PI4FHFU

pith:2009:6PI4FHFUY5OPO75ZIAEM7XFQLN

not attested not anchored not stored refs pending

Galaxy Properties in Clusters: Dependence on the Environment and the Cluster Identification Techniques

H. Muriel, V. Coenda

arxiv:0906.1939 v2 · 2009-06-10 · 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{6PI4FHFUY5OPO75ZIAEM7XFQLN}

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	2026-05-18T02:13:20.983920Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3d1c29cb4c75cf77fb94008cfdcb05b582fba68ee798a6adbc7a136cadce258

Aliases

arxiv: 0906.1939 · arxiv_version: 0906.1939v2 · doi: 10.48550/arxiv.0906.1939 · pith_short_12: 6PI4FHFUY5OP · pith_short_16: 6PI4FHFUY5OPO75Z · pith_short_8: 6PI4FHFU

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/6PI4FHFUY5OPO75ZIAEM7XFQLN \
  | 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: f3d1c29cb4c75cf77fb94008cfdcb05b582fba68ee798a6adbc7a136cadce258

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01457e2b6714b801d3c8403abaefd85c5d993606b17ab4b703670bb3418eed7c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-10T14:02:49Z",
    "title_canon_sha256": "d97e67c73634e60669edca5ea10ec86cf7ca00d74cd38f2a67251500d7a57dd3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.1939",
    "kind": "arxiv",
    "version": 2
  }
}