Pith Number

pith:ESQEZKII

pith:2023:ESQEZKII4O7TY77XNWL2ECUVDP

not attested not anchored not stored refs pending

Correct and Optimal: the Regular Expression Inference Challenge

Ignacio Iacobacci, Martin Berger, Mojtaba Valizadeh, Philip John Gorinski

arxiv:2308.07899 v2 · 2023-08-15 · cs.LG · cs.CL · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ESQEZKII4O7TY77XNWL2ECUVDP}

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	2026-07-05T08:17:28.025681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24a04ca908e3bf3c7ff76d97a20a951be9936ca1b80212d7d5912e129a6ff2c4

Aliases

arxiv: 2308.07899 · arxiv_version: 2308.07899v2 · doi: 10.48550/arxiv.2308.07899 · pith_short_12: ESQEZKII4O7T · pith_short_16: ESQEZKII4O7TY77X · pith_short_8: ESQEZKII

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/ESQEZKII4O7TY77XNWL2ECUVDP \
  | 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: 24a04ca908e3bf3c7ff76d97a20a951be9936ca1b80212d7d5912e129a6ff2c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee9f156f6ae478c4ec04439f9c5f3e99aab350f1c82c5d1b834c61114ea21c97",
    "cross_cats_sorted": [
      "cs.CL",
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2023-08-15T17:40:10Z",
    "title_canon_sha256": "3439e33febe73d937efc5e11746c75e8092dcbd564830787065b07896a3c7f23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2308.07899",
    "kind": "arxiv",
    "version": 2
  }
}