Pith Number

pith:U2O2U7UC

pith:2013:U2O2U7UC427CUCMOMDYUECJKCF

not attested not anchored not stored refs pending

Information filtering in sparse online systems: recommendation via semi-local diffusion

An Zeng, Ming-Sheng Shang, Wei Zeng, Yi-Cheng Zhang

arxiv:1308.3060 v1 · 2013-08-14 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U2O2U7UC427CUCMOMDYUECJKCF}

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	2026-05-18T02:57:23.635746Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a69daa7e82e6be2a098e60f142092a116ccc2649a8f75c90a6945e5644564e2d

Aliases

arxiv: 1308.3060 · arxiv_version: 1308.3060v1 · doi: 10.48550/arxiv.1308.3060 · pith_short_12: U2O2U7UC427C · pith_short_16: U2O2U7UC427CUCMO · pith_short_8: U2O2U7UC

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/U2O2U7UC427CUCMOMDYUECJKCF \
  | 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: a69daa7e82e6be2a098e60f142092a116ccc2649a8f75c90a6945e5644564e2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98e2471044097a34ca4bae8b532d5b4ebe0af1aa67542aa1b5e97d58805e313e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2013-08-14T08:29:41Z",
    "title_canon_sha256": "138a8dfd120e16dc967417d9c60381d8d28695d51f902f311c18228d16b17f33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.3060",
    "kind": "arxiv",
    "version": 1
  }
}