Pith Number

pith:DERLBJPR

pith:2011:DERLBJPRFCWVNBKUJ2YL3NIA65

not attested not anchored not stored refs pending

ORCA: The Overdense Red-sequence Cluster Algorithm

D.N.A. Murphy, J.E Geach, R.G. Bower

arxiv:1109.3182 v1 · 2011-09-14 · 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{DERLBJPRFCWVNBKUJ2YL3NIA65}

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	2026-05-18T02:00:32.857387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1922b0a5f128ad5685544eb0bdb500f76547f5008d9c06fa51ab19696d8f0458

Aliases

arxiv: 1109.3182 · arxiv_version: 1109.3182v1 · doi: 10.48550/arxiv.1109.3182 · pith_short_12: DERLBJPRFCWV · pith_short_16: DERLBJPRFCWVNBKU · pith_short_8: DERLBJPR

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/DERLBJPRFCWVNBKUJ2YL3NIA65 \
  | 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: 1922b0a5f128ad5685544eb0bdb500f76547f5008d9c06fa51ab19696d8f0458

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d4fe7b1539dce93f78e3af5ee67e18b41ba7970d0eca884a09742a7ffe806d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-14T20:00:00Z",
    "title_canon_sha256": "8963295c6418f8e8e9236fb521a43459490d766f266508aa8960fc67085bb80b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.3182",
    "kind": "arxiv",
    "version": 1
  }
}