Pith Number

pith:CPKXJRSS

pith:2012:CPKXJRSSIQ7FPIJS5637TAGE7J

not attested not anchored not stored refs pending

Recommender systems in industrial contexts

Frank Meyer

arxiv:1203.4487 v2 · 2012-03-20 · 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{CPKXJRSSIQ7FPIJS5637TAGE7J}

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	2026-05-18T03:55:46.368854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13d574c652443e57a132efb7f980c4fa50c06519d647c7bcbaef681070e5f4f0

Aliases

arxiv: 1203.4487 · arxiv_version: 1203.4487v2 · doi: 10.48550/arxiv.1203.4487 · pith_short_12: CPKXJRSSIQ7F · pith_short_16: CPKXJRSSIQ7FPIJS · pith_short_8: CPKXJRSS

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/CPKXJRSSIQ7FPIJS5637TAGE7J \
  | 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: 13d574c652443e57a132efb7f980c4fa50c06519d647c7bcbaef681070e5f4f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a21531350421a97ee520a3738e64d362f2f31a823551b00421bc60466dd2ad98",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2012-03-20T16:14:42Z",
    "title_canon_sha256": "1c844cb60cd4e0831058358e536bdb9ff967b567edc11530677d697c8e7fb60b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4487",
    "kind": "arxiv",
    "version": 2
  }
}