Pith Number

pith:RI5VCZ3Y

pith:2013:RI5VCZ3YOM6WAHOCG237ZSLXT6

not attested not anchored not stored refs pending

The IMACS Cluster Building Survey: II. Spectral Evolution of Galaxies in the Epoch of Cluster Assembly

Alan Dressler, Augustus Oemler, Benedetta Vulcani, Bianca Poggianti, Jr., Louis Abramson, Michael D. Gladders

arxiv:1303.4272 v1 · 2013-03-18 · 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{RI5VCZ3YOM6WAHOCG237ZSLXT6}

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	2026-05-18T01:51:01.243128Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a3b516778733d601dc236b7fcc9779fb16eb2faaffd6eee481027fe62ce0cd2

Aliases

arxiv: 1303.4272 · arxiv_version: 1303.4272v1 · doi: 10.48550/arxiv.1303.4272 · pith_short_12: RI5VCZ3YOM6W · pith_short_16: RI5VCZ3YOM6WAHOC · pith_short_8: RI5VCZ3Y

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/RI5VCZ3YOM6WAHOCG237ZSLXT6 \
  | 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: 8a3b516778733d601dc236b7fcc9779fb16eb2faaffd6eee481027fe62ce0cd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef8313e31059ebade627f46a98793a819fce3a4c279bee721002a841cf36c03f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-03-18T14:53:13Z",
    "title_canon_sha256": "0dc72c3440f33818d8932d181b14784569373ec62d99dfc7ba6e4c26738f5ce7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.4272",
    "kind": "arxiv",
    "version": 1
  }
}