Pith Number

pith:ICVZG47T

pith:2018:ICVZG47TL35TSVAPX2LV2FUI2N

not attested not anchored not stored refs pending

Nightmare at test time: How punctuation prevents parsers from generalizing

Anders S{\o}gaard, Isabelle Augenstein, Miryam de Lhoneux

arxiv:1809.00070 v1 · 2018-08-31 · 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{ICVZG47TL35TSVAPX2LV2FUI2N}

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	2026-05-18T00:06:36.211788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40ab9373f35efb39540fbe975d1688d368ac18c7c940812e09aa29ef31bcc5ea

Aliases

arxiv: 1809.00070 · arxiv_version: 1809.00070v1 · doi: 10.48550/arxiv.1809.00070 · pith_short_12: ICVZG47TL35T · pith_short_16: ICVZG47TL35TSVAP · pith_short_8: ICVZG47T

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/ICVZG47TL35TSVAPX2LV2FUI2N \
  | 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: 40ab9373f35efb39540fbe975d1688d368ac18c7c940812e09aa29ef31bcc5ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a1b372ebb2a26d2bcb88f0d880077e0ae5cb14a437ded302499e77e04c6de34",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2018-08-31T22:07:19Z",
    "title_canon_sha256": "abed67d384793f2c886965e3bba1ba957f9c83bd054083248d39d29126c57f69"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.00070",
    "kind": "arxiv",
    "version": 1
  }
}