Pith Number

pith:PDCHNGQZ

pith:2019:PDCHNGQZ3N7K24V2Q5FTODAH5Z

not attested not anchored not stored refs pending

Recommender Systems Notation: Proposed Common Notation for Teaching and Research

Joseph A. Konstan, Michael D. Ekstrand

arxiv:1902.01348 v1 · 2019-02-04 · cs.IR · cs.HC · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PDCHNGQZ3N7K24V2Q5FTODAH5Z}

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	2026-05-17T23:54:14.974794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78c4769a19db7ead72ba874b370c07ee4ab76c04b4e10ba66f0be9e0517f2c49

Aliases

arxiv: 1902.01348 · arxiv_version: 1902.01348v1 · doi: 10.48550/arxiv.1902.01348 · pith_short_12: PDCHNGQZ3N7K · pith_short_16: PDCHNGQZ3N7K24V2 · pith_short_8: PDCHNGQZ

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/PDCHNGQZ3N7K24V2Q5FTODAH5Z \
  | 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: 78c4769a19db7ead72ba874b370c07ee4ab76c04b4e10ba66f0be9e0517f2c49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c131221d37f80ab7be0469a511bff2669fa8149d246dbdafc728eec319a5f504",
    "cross_cats_sorted": [
      "cs.HC",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-02-04T18:11:23Z",
    "title_canon_sha256": "7143fb8ce279e2d4970f9df1adb0727a5ce23af421472c262ac14d10b043ca10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.01348",
    "kind": "arxiv",
    "version": 1
  }
}