Pith Number

pith:CHL2QG3A

pith:2018:CHL2QG3AY4H4KCKC75UVNTYHUM

not attested not anchored not stored refs pending

Biomedical term normalization of EHRs with UMLS

German Rigau, Montse Cuadros, Naiara Perez

arxiv:1802.02870 v2 · 2018-02-08 · 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{CHL2QG3AY4H4KCKC75UVNTYHUM}

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	2026-05-18T00:15:04.987885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11d7a81b60c70fc50942ff6956cf07a30d5ba053689fea2493d91a43df675433

Aliases

arxiv: 1802.02870 · arxiv_version: 1802.02870v2 · doi: 10.48550/arxiv.1802.02870 · pith_short_12: CHL2QG3AY4H4 · pith_short_16: CHL2QG3AY4H4KCKC · pith_short_8: CHL2QG3A

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/CHL2QG3AY4H4KCKC75UVNTYHUM \
  | 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: 11d7a81b60c70fc50942ff6956cf07a30d5ba053689fea2493d91a43df675433

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4749ee1f758cc150cc915c62b0a813840e8a8124bfd03b90a0e079ac863bad7e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2018-02-08T14:16:18Z",
    "title_canon_sha256": "e94a26ca12113157ccb1b73fc0c57a13b16c5fa7f20bc3df82bf3334685ce17e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02870",
    "kind": "arxiv",
    "version": 2
  }
}