Pith Number

pith:DXJMHXTP

pith:2010:DXJMHXTPYKU3XUU2ADHPHJ5CYK

not attested not anchored not stored refs pending

An environmental Butcher-Oemler effect in intermediate redshift X-ray clusters

H. Hoekstra, J.P. Willis, M. Pierre, S.A. Urquhart

arxiv:1004.0020 v1 · 2010-03-31 · 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{DXJMHXTPYKU3XUU2ADHPHJ5CYK}

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	2026-05-18T02:08:15.267253Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1dd2c3de6fc2a9bbd29a00cef3a7a2c2820dab2d9aa2daad35268918b5d5e23c

Aliases

arxiv: 1004.0020 · arxiv_version: 1004.0020v1 · doi: 10.48550/arxiv.1004.0020 · pith_short_12: DXJMHXTPYKU3 · pith_short_16: DXJMHXTPYKU3XUU2 · pith_short_8: DXJMHXTP

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/DXJMHXTPYKU3XUU2ADHPHJ5CYK \
  | 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: 1dd2c3de6fc2a9bbd29a00cef3a7a2c2820dab2d9aa2daad35268918b5d5e23c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef5e60e080a93a753eae2d1cb86be5e2ed442b898915cb8b568e3627d0c13a8d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-03-31T22:15:06Z",
    "title_canon_sha256": "535b05aa9c496bce8e9d167675a464fdd5e414f14563ace1f7b77b17815fe8ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.0020",
    "kind": "arxiv",
    "version": 1
  }
}