Pith Number

pith:U6SGN4IE

pith:2025:U6SGN4IEMV6XBA3MVQBCWUR22A

not attested not anchored not stored refs pending

Building a Recommendation System Using Amazon Product Co-Purchasing Network

Catherine Zhao, Minghao Liu, Nathan Zhou

arxiv:2506.02482 v1 · 2025-06-03 · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U6SGN4IEMV6XBA3MVQBCWUR22A}

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	2026-07-05T11:15:02.776775Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7a466f104657d70836cac022b523ad025586c0778b80f92d65627a6ea5f76ef

Aliases

arxiv: 2506.02482 · arxiv_version: 2506.02482v1 · doi: 10.48550/arxiv.2506.02482 · pith_short_12: U6SGN4IEMV6X · pith_short_16: U6SGN4IEMV6XBA3M · pith_short_8: U6SGN4IE

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/U6SGN4IEMV6XBA3MVQBCWUR22A \
  | 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: a7a466f104657d70836cac022b523ad025586c0778b80f92d65627a6ea5f76ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b3c83bea3cca7c875226e58276a7b6189a0a9b0894da6c1c7421b9898ab0b0f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2025-06-03T05:52:22Z",
    "title_canon_sha256": "2fc30adfa3d6c6623824efdd2ca2dd3023f83d283aae792a22dfa0a91826f36b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.02482",
    "kind": "arxiv",
    "version": 1
  }
}