Pith Number

pith:SZUZQFFZ

pith:2018:SZUZQFFZTFC6REFQAWY4AZZBIW

not attested not anchored not stored refs pending

Ultra-Fine Entity Typing

Eunsol Choi, Luke Zettlemoyer, Omer Levy, Yejin Choi

arxiv:1807.04905 v1 · 2018-07-13 · cs.CL · cs.AI · 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{SZUZQFFZTFC6REFQAWY4AZZBIW}

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	2026-05-18T00:10:49.449424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

96699814b99945e890b005b1c0672145bf46861f4d0f29036aaee3f1953ae042

Aliases

arxiv: 1807.04905 · arxiv_version: 1807.04905v1 · doi: 10.48550/arxiv.1807.04905 · pith_short_12: SZUZQFFZTFC6 · pith_short_16: SZUZQFFZTFC6REFQ · pith_short_8: SZUZQFFZ

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/SZUZQFFZTFC6REFQAWY4AZZBIW \
  | 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: 96699814b99945e890b005b1c0672145bf46861f4d0f29036aaee3f1953ae042

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18059a45b5f9f255aa83acdb31065063f5ed0191b9a7a40e65d03822ff09ae48",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2018-07-13T04:19:03Z",
    "title_canon_sha256": "56a739beb9dd783a2c93890a5cfdb0fb2499341828c83c5c30b1a509c01f2a90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.04905",
    "kind": "arxiv",
    "version": 1
  }
}