Pith Number

pith:LFPK7HF2

pith:2019:LFPK7HF2H3Y2SVUL74UAXZO5AE

not attested not anchored not stored refs pending

Density-based Community Detection/Optimization

Rui Portocarrero Sarmento

arxiv:1904.12593 v1 · 2019-04-07 · cs.SI · cs.IR · 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{LFPK7HF2H3Y2SVUL74UAXZO5AE}

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	2026-05-17T23:47:34.712174Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

595eaf9cba3ef1a9568bff280be5dd011d7b01c170c3c2d4d1efaf47eb2a3587

Aliases

arxiv: 1904.12593 · arxiv_version: 1904.12593v1 · doi: 10.48550/arxiv.1904.12593 · pith_short_12: LFPK7HF2H3Y2 · pith_short_16: LFPK7HF2H3Y2SVUL · pith_short_8: LFPK7HF2

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/LFPK7HF2H3Y2SVUL74UAXZO5AE \
  | 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: 595eaf9cba3ef1a9568bff280be5dd011d7b01c170c3c2d4d1efaf47eb2a3587

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff8e45a451d67177bab37e16ddb6d36ff9b84fdae5fd7432b275ae89fe3d0c40",
    "cross_cats_sorted": [
      "cs.IR",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2019-04-07T21:01:21Z",
    "title_canon_sha256": "0670d5ad89901beaa4c5707391741533c5ee9c770c12745ede2cd9b07cc2b324"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12593",
    "kind": "arxiv",
    "version": 1
  }
}