Pith Number

pith:OKMV75IV

pith:2019:OKMV75IVPIF7LXFG4J3MDNIOA5

not attested not anchored not stored refs pending

Multi-Grained Named Entity Recognition

Chenwei Zhang, Congying Xia, Fenglong Ma, Nan Du, Philip Yu, Tao Yang, Wei Fan, Xian Wu, Yaliang Li

arxiv:1906.08449 v1 · 2019-06-20 · 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{OKMV75IVPIF7LXFG4J3MDNIOA5}

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	2026-07-05T00:52:26.816678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72995ff5157a0bf5dca6e276c1b50e075a444cb53c1ece061ee88728fccc1426

Aliases

arxiv: 1906.08449 · arxiv_version: 1906.08449v1 · doi: 10.48550/arxiv.1906.08449 · pith_short_12: OKMV75IVPIF7 · pith_short_16: OKMV75IVPIF7LXFG · pith_short_8: OKMV75IV

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/OKMV75IVPIF7LXFG4J3MDNIOA5 \
  | 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: 72995ff5157a0bf5dca6e276c1b50e075a444cb53c1ece061ee88728fccc1426

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb9069c1c4d0827ecd07e0f9f05e281ecfc08e6905b3f74b6ed7ce16f01175c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-06-20T05:33:30Z",
    "title_canon_sha256": "2ed3b8561037f382dbf9b6cc48787b6ecf685e2e48a7ca428d4ec9719ae65689"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.08449",
    "kind": "arxiv",
    "version": 1
  }
}