Pith Number

pith:XUGDEWSH

pith:2019:XUGDEWSH4Z2UIMH3NDCGQYPT36

not attested not anchored not stored refs pending

A Books Recommendation Approach Based on Online Bookstore Data

Bernie Liu, Jiahui Chen, Jing Chen, Xinyu Wei

arxiv:1906.06542 v1 · 2019-06-15 · cs.DB · 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{XUGDEWSH4Z2UIMH3NDCGQYPT36}

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	2026-05-17T23:43:13.400931Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd0c325a47e6754430fb68c46861f3df9901268a1cb88b653ca6b9b79cb37ec6

Aliases

arxiv: 1906.06542 · arxiv_version: 1906.06542v1 · doi: 10.48550/arxiv.1906.06542 · pith_short_12: XUGDEWSH4Z2U · pith_short_16: XUGDEWSH4Z2UIMH3 · pith_short_8: XUGDEWSH

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/XUGDEWSH4Z2UIMH3NDCGQYPT36 \
  | 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: bd0c325a47e6754430fb68c46861f3df9901268a1cb88b653ca6b9b79cb37ec6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8859412ac0bcc2a979616f060b2078dd905577efd5eced3100e7d14a54a90893",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2019-06-15T12:32:17Z",
    "title_canon_sha256": "c0e16c4d639776f9e9eb3c803abff0367b54f8527975a6f14c5ce47c0c685325"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.06542",
    "kind": "arxiv",
    "version": 1
  }
}