Pith Number

pith:DUDPBQUJ

pith:2019:DUDPBQUJOTGJXKMIMF4SUU7T3A

not attested not anchored not stored refs pending

Detecting Ghostwriters in High Schools

August S{\o}rensen, Magnus Stavngaard, Niklas Hjuler, Stephan Lorenzen, Stephen Alstrup

arxiv:1906.01635 v1 · 2019-06-04 · cs.CL · cs.LG · stat.ML

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DUDPBQUJOTGJXKMIMF4SUU7T3A}

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	2026-05-17T23:44:06.620501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d06f0c28974cc9ba98861792a53f3d81dbab59ebb2a692fce563648612f9c4b

Aliases

arxiv: 1906.01635 · arxiv_version: 1906.01635v1 · doi: 10.48550/arxiv.1906.01635 · pith_short_12: DUDPBQUJOTGJ · pith_short_16: DUDPBQUJOTGJXKMI · pith_short_8: DUDPBQUJ

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/DUDPBQUJOTGJXKMIMF4SUU7T3A \
  | 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: 1d06f0c28974cc9ba98861792a53f3d81dbab59ebb2a692fce563648612f9c4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe6cdb98876f5e690e19393487d2fc0d33d1ff01cecae66133fd7ea8498c9095",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-06-04T13:03:38Z",
    "title_canon_sha256": "ed4d4dda46aee19b29ad9b1680fe65bccaa41e4aff20351cb2fe1665e909661c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.01635",
    "kind": "arxiv",
    "version": 1
  }
}