Pith Number

pith:RZ7K3BU3

pith:2011:RZ7K3BU3TUQL4D3BNSKELAVVJN

not attested not anchored not stored refs pending

What determines the fraction of elliptical galaxies in clusters?

Dave Wilman, Fabio Fontanot, Gabriella De Lucia

arxiv:1109.2599 v1 · 2011-09-12 · 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{RZ7K3BU3TUQL4D3BNSKELAVVJN}

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	2026-05-18T02:00:34.076584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e7ead869b9d20be0f616c944582b54b53d8bc7fbe37d0e45e33394f0f21a480

Aliases

arxiv: 1109.2599 · arxiv_version: 1109.2599v1 · doi: 10.48550/arxiv.1109.2599 · pith_short_12: RZ7K3BU3TUQL · pith_short_16: RZ7K3BU3TUQL4D3B · pith_short_8: RZ7K3BU3

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/RZ7K3BU3TUQL4D3BNSKELAVVJN \
  | 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: 8e7ead869b9d20be0f616c944582b54b53d8bc7fbe37d0e45e33394f0f21a480

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcf27868dbb85fe5d5555f2a277025e869be6539a74a7e1691863025c2ea9704",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-12T20:00:15Z",
    "title_canon_sha256": "d98277d5f880792a83829483b994eeb820d23fcfc6e14803715e0fa49de058fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.2599",
    "kind": "arxiv",
    "version": 1
  }
}