Pith Number

pith:L2W3JWSY

pith:2009:L2W3JWSYG6YXTNLN5MAQUAB6GG

not attested not anchored not stored refs pending

Citation graph, weighted impact factors and performance indices

Karol Zyczkowski

arxiv:0904.2110 v4 · 2009-04-14 · physics.soc-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{L2W3JWSYG6YXTNLN5MAQUAB6GG}

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	2026-05-18T04:39:49.413301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5eadb4da5837b179b56deb010a003e31a85bb0fd5c51262d085562604a7d1c0c

Aliases

arxiv: 0904.2110 · arxiv_version: 0904.2110v4 · doi: 10.48550/arxiv.0904.2110 · pith_short_12: L2W3JWSYG6YX · pith_short_16: L2W3JWSYG6YXTNLN · pith_short_8: L2W3JWSY

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/L2W3JWSYG6YXTNLN5MAQUAB6GG \
  | 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: 5eadb4da5837b179b56deb010a003e31a85bb0fd5c51262d085562604a7d1c0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb9be039db6473be9022457b33a929b0abdd5d5515972c887a6d0cd592755c09",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2009-04-14T12:28:20Z",
    "title_canon_sha256": "72d071a192c56e71ffaccd9525f1197af6278862b579d6b1652cbf58ff9e05e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2110",
    "kind": "arxiv",
    "version": 4
  }
}