Pith Number

pith:E25VCHHJ

pith:2018:E25VCHHJK6QD7NFZMOQHAJ65DS

not attested not anchored not stored refs pending

Spectral Collaborative Filtering

Chun-Ta Lu, Fei Jiang, Jiawei Zhang, Lei Zheng, Philip S. Yu

arxiv:1808.10523 v1 · 2018-08-30 · 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{E25VCHHJK6QD7NFZMOQHAJ65DS}

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	2026-05-18T00:06:45.464478Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26bb511ce957a03fb4b963a07027dd1cab7170fdfdd915c9cd176bf7780b6746

Aliases

arxiv: 1808.10523 · arxiv_version: 1808.10523v1 · doi: 10.48550/arxiv.1808.10523 · pith_short_12: E25VCHHJK6QD · pith_short_16: E25VCHHJK6QD7NFZ · pith_short_8: E25VCHHJ

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/E25VCHHJK6QD7NFZMOQHAJ65DS \
  | 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: 26bb511ce957a03fb4b963a07027dd1cab7170fdfdd915c9cd176bf7780b6746

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba252ba8b18f8b5931e1d8c05864bb708e5b6163a814dfdd3197b575912102f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2018-08-30T21:12:03Z",
    "title_canon_sha256": "d0e21a49c84bba93469b549b5a903b1270c78910f5c7b1e0515b8cbc22f8d548"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.10523",
    "kind": "arxiv",
    "version": 1
  }
}