Pith Number

pith:ZJ7QGE3J

pith:2021:ZJ7QGE3JTVPW5W57WKJCVR6O7Z

not attested not anchored not stored refs pending

Open-domain Topic Identification of Out-of-domain Utterances using Wikipedia

A. Augustin, A. Papangelis, J. Hare, M. Kotti, N. Braunschweiler, P. Vougiouklis

arxiv:2101.11134 v1 · 2021-01-26 · cs.CL · 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{ZJ7QGE3JTVPW5W57WKJCVR6O7Z}

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	2026-07-05T02:10:09.434563Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca7f0313699d5f6edbbfb2922ac7cefe5b9d02e00ce11290d57c4248609dc146

Aliases

arxiv: 2101.11134 · arxiv_version: 2101.11134v1 · doi: 10.48550/arxiv.2101.11134 · pith_short_12: ZJ7QGE3JTVPW · pith_short_16: ZJ7QGE3JTVPW5W57 · pith_short_8: ZJ7QGE3J

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/ZJ7QGE3JTVPW5W57WKJCVR6O7Z \
  | 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: ca7f0313699d5f6edbbfb2922ac7cefe5b9d02e00ce11290d57c4248609dc146

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15e0829a3f7900b237fcd19a6816919ae98b682d1c6c0fc340e83f778b20f069",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-01-26T23:46:52Z",
    "title_canon_sha256": "112d91a69aa3ab5ad7aae1fc06c77c43a55864158bb4ec4838828af5b22c75fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.11134",
    "kind": "arxiv",
    "version": 1
  }
}