Pith Number

pith:55D6AJPU

pith:2018:55D6AJPUPKUPFF5Q5K5HPOCMVQ

not attested not anchored not stored refs pending

A Distributed Collaborative Filtering Algorithm Using Multiple Data Sources

Amr El Abbadi, Esther Pacitti, Florent Masseglia, Maximilien Servajean, Mohamed Reda Bouadjenek

arxiv:1807.05853 v1 · 2018-07-16 · cs.IR · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{55D6AJPUPKUPFF5Q5K5HPOCMVQ}

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	2026-05-18T00:10:42.399140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef47e025f47aa8f297b0eaba77b84cac3c0aadff767b1704b5cfe833cde7d2f0

Aliases

arxiv: 1807.05853 · arxiv_version: 1807.05853v1 · doi: 10.48550/arxiv.1807.05853 · pith_short_12: 55D6AJPUPKUP · pith_short_16: 55D6AJPUPKUPFF5Q · pith_short_8: 55D6AJPU

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/55D6AJPUPKUPFF5Q5K5HPOCMVQ \
  | 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: ef47e025f47aa8f297b0eaba77b84cac3c0aadff767b1704b5cfe833cde7d2f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ede9c1cba69aaa6e843f5cacbc7a7bd14eef42ec8deba831613ecab3a31deb14",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2018-07-16T13:35:58Z",
    "title_canon_sha256": "e4a6b6d7d53713b9614f1fb2e2fa6e72b4904d6b7b94d8112705df181ddbd434"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.05853",
    "kind": "arxiv",
    "version": 1
  }
}