Pith Number

pith:HCE4HRLZ

pith:2025:HCE4HRLZBLLLIQZIJ36ANESN7F

not attested not anchored not stored refs pending

Inferring Attributed Grammars from Parser Implementations

Andreas Pointner, Herbert Pr\"ahofer, Josef Pichler

arxiv:2507.13117 v1 · 2025-07-17 · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HCE4HRLZBLLLIQZIJ36ANESN7F}

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	2026-07-05T11:38:55.024273Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3889c3c5790ad6b443284efc06924df97e1a43e2a1f4f9a5ff8034a7be86a941

Aliases

arxiv: 2507.13117 · arxiv_version: 2507.13117v1 · doi: 10.48550/arxiv.2507.13117 · pith_short_12: HCE4HRLZBLLL · pith_short_16: HCE4HRLZBLLLIQZI · pith_short_8: HCE4HRLZ

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/HCE4HRLZBLLLIQZIJ36ANESN7F \
  | 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: 3889c3c5790ad6b443284efc06924df97e1a43e2a1f4f9a5ff8034a7be86a941

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d31c43d0e36d4350d87c193da43940be6e7ed994a77d0a72efbaf5689d144566",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2025-07-17T13:32:59Z",
    "title_canon_sha256": "1aa491fbb12819961ef7468f4a9d7acd619ade4726c1744744604c970923b782"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.13117",
    "kind": "arxiv",
    "version": 1
  }
}