Pith Number

pith:4HEEQQYN

pith:2019:4HEEQQYNGQB7VF6T7DIW7ZAMD7

not attested not anchored not stored refs pending

Query-Based Named Entity Recognition

Jiwei Li, Xiaoya Li, Yuxian Meng, Zijun Sun

arxiv:1908.09138 v2 · 2019-08-24 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4HEEQQYNGQB7VF6T7DIW7ZAMD7}

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	2026-07-05T00:16:36.351684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1c848430d3403fa97d3f8d16fe40c1fd95bb8c15b660d53c72d9f330083ad0e

Aliases

arxiv: 1908.09138 · arxiv_version: 1908.09138v2 · doi: 10.48550/arxiv.1908.09138 · pith_short_12: 4HEEQQYNGQB7 · pith_short_16: 4HEEQQYNGQB7VF6T · pith_short_8: 4HEEQQYN

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/4HEEQQYNGQB7VF6T7DIW7ZAMD7 \
  | 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: e1c848430d3403fa97d3f8d16fe40c1fd95bb8c15b660d53c72d9f330083ad0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d979bf1b70bc048961c547f615fd0eefffade197ea581982eda17a1fd75ed63d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-08-24T13:42:57Z",
    "title_canon_sha256": "24f3ca3afa017a657d80eb271f2959728b65b6d0a8915a3bd723cae9a3f23974"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.09138",
    "kind": "arxiv",
    "version": 2
  }
}