Pith Number

pith:55U5LCDT

pith:2019:55U5LCDTG6MSKTBEGXPOUSL63Z

not attested not anchored not stored refs pending

Cross-referencing using Fine-grained Topic Modeling

Emily Hales, Jeffrey Lund, Kevin Seppi, Piper Armstrong, Stephen Cowley, Wilson Fearn

arxiv:1905.07508 v1 · 2019-05-18 · cs.CL · cs.IR · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{55U5LCDTG6MSKTBEGXPOUSL63Z}

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	2026-05-17T23:45:49.502571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef69d588733799254c2435deea497ede70afc7909d71faad996c0004d6c1bf10

Aliases

arxiv: 1905.07508 · arxiv_version: 1905.07508v1 · doi: 10.48550/arxiv.1905.07508 · pith_short_12: 55U5LCDTG6MS · pith_short_16: 55U5LCDTG6MSKTBE · pith_short_8: 55U5LCDT

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/55U5LCDTG6MSKTBEGXPOUSL63Z \
  | 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: ef69d588733799254c2435deea497ede70afc7909d71faad996c0004d6c1bf10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d480600f7b264c2ec5efd4feb187c72374bd7c7b1b30b4ef49401418330ce798",
    "cross_cats_sorted": [
      "cs.IR",
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-05-18T00:28:37Z",
    "title_canon_sha256": "58d443326fae6b9f182394002e6e444ca461256d55c6b9d36c231ef30e35c82c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.07508",
    "kind": "arxiv",
    "version": 1
  }
}