Pith Number

pith:NFX4MJGP

pith:2013:NFX4MJGPLIOSBSM7FTIEC7XNHH

not attested not anchored not stored refs pending

Revealing social networks of spammers through spectral clustering

Alfred O. Hero III, Kevin S. Xu, Mark Kliger, Peter J. Woolf, Yilun Chen

arxiv:1305.0051 v1 · 2013-04-30 · cs.SI · cs.LG · physics.soc-ph · stat.ML

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NFX4MJGPLIOSBSM7FTIEC7XNHH}

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	2026-05-18T03:26:42.159729Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

696fc624cf5a1d20c99f2cd0417eed39c1c5d4f3981b1097dcd4e51481e4fda2

Aliases

arxiv: 1305.0051 · arxiv_version: 1305.0051v1 · doi: 10.48550/arxiv.1305.0051 · pith_short_12: NFX4MJGPLIOS · pith_short_16: NFX4MJGPLIOSBSM7 · pith_short_8: NFX4MJGP

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/NFX4MJGPLIOSBSM7FTIEC7XNHH \
  | 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: 696fc624cf5a1d20c99f2cd0417eed39c1c5d4f3981b1097dcd4e51481e4fda2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b16b37905b2c9f0d31249cd705a69cfeaa91092ceddd077881a341ea092e32d",
    "cross_cats_sorted": [
      "cs.LG",
      "physics.soc-ph",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2013-04-30T22:57:12Z",
    "title_canon_sha256": "3a5a6b70e9274be4ee383a3c28904979472d77b7f4e34a571b3553ccbf391a22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0051",
    "kind": "arxiv",
    "version": 1
  }
}