Pith Number

pith:NP57LRXS

pith:2019:NP57LRXSV2IZOT6CU5Y34S257H

not attested not anchored not stored refs pending

Pun Generation with Surprise

He He, Nanyun Peng, Percy Liang

arxiv:1904.06828 v1 · 2019-04-15 · 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{NP57LRXSV2IZOT6CU5Y34S257H}

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	2026-05-17T23:48:36.073200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bfbf5c6f2ae91974fc2a771be4b5df9c024e018b75290be6993ed074294f92f

Aliases

arxiv: 1904.06828 · arxiv_version: 1904.06828v1 · doi: 10.48550/arxiv.1904.06828 · pith_short_12: NP57LRXSV2IZ · pith_short_16: NP57LRXSV2IZOT6C · pith_short_8: NP57LRXS

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/NP57LRXSV2IZOT6CU5Y34S257H \
  | 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: 6bfbf5c6f2ae91974fc2a771be4b5df9c024e018b75290be6993ed074294f92f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39fa9ab63b87ca32d852649119b3f826a9e8fc8217ea7f3a244163bfe4fb13fc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-04-15T03:40:16Z",
    "title_canon_sha256": "d4b16df7b06ee7a67b592b2ad011861a8db78976052ed122a5166c9e32dcf1d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.06828",
    "kind": "arxiv",
    "version": 1
  }
}