Pith Number

pith:YWSL37DH

pith:2013:YWSL37DHJBMXRHF3M6S5GKXU3A

not attested not anchored not stored refs pending

Information Filtering via Collaborative User Clustering Modeling

Chuang Liu, Chu-Xu Zhang, Hao Liu, Lu Yu, Xiao-Yong Yan, Zi-Ke Zhang

arxiv:1309.0691 v4 · 2013-09-03 · cs.IR · cs.SI · 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{YWSL37DHJBMXRHF3M6S5GKXU3A}

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	2026-05-18T01:47:50.378051Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c5a4bdfc674859789cbb67a5d32af4d8282eaff072e66f3ef3e3b1f237ab2b12

Aliases

arxiv: 1309.0691 · arxiv_version: 1309.0691v4 · doi: 10.48550/arxiv.1309.0691 · pith_short_12: YWSL37DHJBMX · pith_short_16: YWSL37DHJBMXRHF3 · pith_short_8: YWSL37DH

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/YWSL37DHJBMXRHF3M6S5GKXU3A \
  | 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: c5a4bdfc674859789cbb67a5d32af4d8282eaff072e66f3ef3e3b1f237ab2b12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "902c7cb483cddef804235f32058ba7d09b086538d3c9956059ded6e756278556",
    "cross_cats_sorted": [
      "cs.SI",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2013-09-03T14:20:00Z",
    "title_canon_sha256": "93b76d77aa8e57aec1d88bd2c3e424d8c599ddbbf073421f8ae7eb620fef450a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.0691",
    "kind": "arxiv",
    "version": 4
  }
}