Pith Number

pith:7W2T7KVX

pith:2021:7W2T7KVXIGMW4MWQ6EWORF7UNH

not attested not anchored not stored refs pending

BoningKnife: Joint Entity Mention Detection and Typing for Nested NER via prior Boundary Knowledge

B\"orje F. Karlsson, Chengxi Zhang, Guoxin Wang, Huiqiang Jiang, Weile Chen

arxiv:2107.09429 v1 · 2021-07-20 · 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{7W2T7KVXIGMW4MWQ6EWORF7UNH}

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	2026-07-05T02:59:30.709622Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fdb53faab741996e32d0f12ce897f469e538c69700922ea2238e0e533430ce4b

Aliases

arxiv: 2107.09429 · arxiv_version: 2107.09429v1 · doi: 10.48550/arxiv.2107.09429 · pith_short_12: 7W2T7KVXIGMW · pith_short_16: 7W2T7KVXIGMW4MWQ · pith_short_8: 7W2T7KVX

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/7W2T7KVXIGMW4MWQ6EWORF7UNH \
  | 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: fdb53faab741996e32d0f12ce897f469e538c69700922ea2238e0e533430ce4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4370ea0d9f9e364eb1dad8d9e656dc7569e88e92100a9ad86783392e33470938",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-07-20T11:44:36Z",
    "title_canon_sha256": "8a916ad31d9d1c4f2cc74309a4958bd83ead66653156a9c90eac3b95f2667eca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.09429",
    "kind": "arxiv",
    "version": 1
  }
}