Pith Number

pith:N755CBYX

pith:2018:N755CBYXSUUE7CTJDAC2SKFPHK

not attested not anchored not stored refs pending

Trust-Based Collaborative Filtering: Tackling the Cold Start Problem Using Regular Equivalence

Dominik Kowald, Elisabeth Lex, Emanuel Lacic, Tomislav Duricic

arxiv:1807.06839 v1 · 2018-07-18 · cs.SI · 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{N755CBYXSUUE7CTJDAC2SKFPHK}

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	2026-05-18T00:10:25.585414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ffbd1071795284f8a691805a928af3ab07b9d1d249e6eee1c18a9263a3d7fa0

Aliases

arxiv: 1807.06839 · arxiv_version: 1807.06839v1 · doi: 10.48550/arxiv.1807.06839 · pith_short_12: N755CBYXSUUE · pith_short_16: N755CBYXSUUE7CTJ · pith_short_8: N755CBYX

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/N755CBYXSUUE7CTJDAC2SKFPHK \
  | 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: 6ffbd1071795284f8a691805a928af3ab07b9d1d249e6eee1c18a9263a3d7fa0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b0e8d334fa96b5596aba0c6ddee58037014841e6857ef46b7245a13d3df1c0e",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2018-07-18T10:05:44Z",
    "title_canon_sha256": "ee0152f5a46d1f2446d79f0200424170497e959f36a8fc33ff85635e87a01080"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06839",
    "kind": "arxiv",
    "version": 1
  }
}