Pith Number

pith:ADE5DAGF

pith:2021:ADE5DAGFOP3CLE5HSABDUBFZMG

not attested not anchored not stored refs pending

Blockchain-based Recommender Systems: Applications, Challenges and Future Opportunities

Abbes Amira, Abdullah Alsalemi, Aya Sayed, Christos Sardianos, Faycal Bensaali, George Dimitrakopoulos, Iraklis Varlamis, Magdalini Eirinaki, Yassine Himeur

arxiv:2111.11509 v1 · 2021-11-22 · cs.IR · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ADE5DAGFOP3CLE5HSABDUBFZMG}

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	2026-07-05T03:34:55.021655Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00c9d180c573f62593a790023a04b961b9ab10dc230158f3288fa1dcf8f8bae8

Aliases

arxiv: 2111.11509 · arxiv_version: 2111.11509v1 · doi: 10.48550/arxiv.2111.11509 · pith_short_12: ADE5DAGFOP3C · pith_short_16: ADE5DAGFOP3CLE5H · pith_short_8: ADE5DAGF

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/ADE5DAGFOP3CLE5HSABDUBFZMG \
  | 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: 00c9d180c573f62593a790023a04b961b9ab10dc230158f3288fa1dcf8f8bae8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2cd1cf0b21377a676b25e3aea9a7515bb9f18dea18035a226602174e5ae30a71",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-11-22T20:09:38Z",
    "title_canon_sha256": "5760b351148414fb815d0f6c316f3cebda641d86a7a33b751ba9aaf6546fe221"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.11509",
    "kind": "arxiv",
    "version": 1
  }
}