Pith Number

pith:C74GPJVQ

pith:2021:C74GPJVQZ2H3JCKPPK2A3PSAIG

not attested not anchored not stored refs pending

Improving reference mining in patents with BERT

Ken Voskuil, Suzan Verberne

arxiv:2101.01039 v3 · 2021-01-04 · cs.IR · 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{C74GPJVQZ2H3JCKPPK2A3PSAIG}

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	2026-07-05T02:21:54.632675Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17f867a6b0ce8fb4894f7ab40dbe4041894fb7ac35fd664852cc1409a221c636

Aliases

arxiv: 2101.01039 · arxiv_version: 2101.01039v3 · doi: 10.48550/arxiv.2101.01039 · pith_short_12: C74GPJVQZ2H3 · pith_short_16: C74GPJVQZ2H3JCKP · pith_short_8: C74GPJVQ

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/C74GPJVQZ2H3JCKPPK2A3PSAIG \
  | 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: 17f867a6b0ce8fb4894f7ab40dbe4041894fb7ac35fd664852cc1409a221c636

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d83ac4dc90dde6558f75c7dc74c9163847698ade5e9098ad45cb38a1fb1f2507",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-01-04T15:56:21Z",
    "title_canon_sha256": "4f2b2ad0221baf6046a913e6f93d4deade320b475f34ef08e1c595dfc87c7a47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.01039",
    "kind": "arxiv",
    "version": 3
  }
}