Pith Number

pith:YRNPBM2K

pith:2000:YRNPBM2KZC5UMP46LWLTY656JI

not attested not anchored not stored refs pending

The Evolution of Population Gradients in Galaxy Clusters: the Butcher-Oemler Effect and Cluster Infall

E. Ellingson, H. K. C. Yee, H. Lin, R. G. Carlberg

arxiv:astro-ph/0010141 v1 · 2000-10-06 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YRNPBM2KZC5UMP46LWLTY656JI}

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	2026-07-04T16:17:15.202816Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c45af0b34ac8bb463f9e5d973c7bbe4a1ffa6e56498debb5baaa72cb240e0fc4

Aliases

arxiv: astro-ph/0010141 · arxiv_version: astro-ph/0010141v1 · doi: 10.48550/arxiv.astro-ph/0010141 · pith_short_12: YRNPBM2KZC5U · pith_short_16: YRNPBM2KZC5UMP46 · pith_short_8: YRNPBM2K

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/YRNPBM2KZC5UMP46LWLTY656JI \
  | 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: c45af0b34ac8bb463f9e5d973c7bbe4a1ffa6e56498debb5baaa72cb240e0fc4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df2f5d79d5f68f8bfab417a8bbd19a1f0cc6d93852c925d691c84c6a18d450c0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-10-06T22:56:35Z",
    "title_canon_sha256": "fd1dbc51f3a925829e89104642c31298a0fe6ef81af4217990fbd747236c1ea0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0010141",
    "kind": "arxiv",
    "version": 1
  }
}