Pith Number

pith:PNE7S6BK

pith:2016:PNE7S6BKVTQCMVM3UZE4TZTTYQ

not attested not anchored not stored refs pending

Beyond Movie Recommendations: Solving the Continuous Cold Start Problem in E-commerceRecommendations

Alexander Tuzhilin, Chad Davis, Djoerd Hiemstra, Ivan Kovacek, Jaap Kamps, Julia Kiseleva, Lucas Bernardi, Mats Stafseng Einarsen, Melanie J.I. Mueller

arxiv:1607.07904 v1 · 2016-07-26 · cs.IR

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

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	2026-05-18T01:10:22.980526Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b49f9782aace026559ba649c9e673c410c88845306fe7c96431ba680750e00c

Aliases

arxiv: 1607.07904 · arxiv_version: 1607.07904v1 · doi: 10.48550/arxiv.1607.07904 · pith_short_12: PNE7S6BKVTQC · pith_short_16: PNE7S6BKVTQCMVM3 · pith_short_8: PNE7S6BK

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/PNE7S6BKVTQCMVM3UZE4TZTTYQ \
  | 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: 7b49f9782aace026559ba649c9e673c410c88845306fe7c96431ba680750e00c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8872268ad97bc3f3faf52d0f0e171174126f2e3d27e7d32547436581632e8b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2016-07-26T21:32:14Z",
    "title_canon_sha256": "a086f14f9f429521d6ac06952fb7201ed62cb4a0bdc58ddd1be2d684351590da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.07904",
    "kind": "arxiv",
    "version": 1
  }
}