Pith Number

pith:ICGTCSZP

pith:2009:ICGTCSZP7RRI6ZG2ULW7UUGVLQ

not attested not anchored not stored refs pending

The Properties of Fossil Groups of Galaxies

Paul Eigenthaler, Werner W. Zeilinger

arxiv:0908.1700 v1 · 2009-08-12 · 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{ICGTCSZP7RRI6ZG2ULW7UUGVLQ}

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	2026-05-18T02:12:35.012634Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

408d314b2ffc628f64daa2edfa50d55c3c1b4468080a2129475406970a1e8b29

Aliases

arxiv: 0908.1700 · arxiv_version: 0908.1700v1 · doi: 10.48550/arxiv.0908.1700 · pith_short_12: ICGTCSZP7RRI · pith_short_16: ICGTCSZP7RRI6ZG2 · pith_short_8: ICGTCSZP

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/ICGTCSZP7RRI6ZG2ULW7UUGVLQ \
  | 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: 408d314b2ffc628f64daa2edfa50d55c3c1b4468080a2129475406970a1e8b29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7ac0375daf2be245e10856c0716910900b0087c61fbb2c6cb0cb351b7f1e3d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-12T12:52:40Z",
    "title_canon_sha256": "c470d567e936d8b01b4d2acb020b8bd540891d3473ef1f37ac5e80e5a7df2c20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.1700",
    "kind": "arxiv",
    "version": 1
  }
}