Pith Number

pith:ISVD5K7Z

pith:2012:ISVD5K7ZEIMBELP3CKWNKO474E

not attested not anchored not stored refs pending

Structured Grammars are Effective

Ond\v{r}ej B\'ilka

arxiv:1205.1877 v1 · 2012-05-09 · 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{ISVD5K7ZEIMBELP3CKWNKO474E}

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	2026-05-18T03:55:58.411177Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44aa3eabf92218122dfb12acd53b9fe1351789c6e2ba15974e6d89b522b38129

Aliases

arxiv: 1205.1877 · arxiv_version: 1205.1877v1 · doi: 10.48550/arxiv.1205.1877 · pith_short_12: ISVD5K7ZEIMB · pith_short_16: ISVD5K7ZEIMBELP3 · pith_short_8: ISVD5K7Z

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/ISVD5K7ZEIMBELP3CKWNKO474E \
  | 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: 44aa3eabf92218122dfb12acd53b9fe1351789c6e2ba15974e6d89b522b38129

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff8d4e2ffc63dd3da03a173bbee48c91a568cb2f4988c2d3d340d62d78b8f812",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2012-05-09T06:08:13Z",
    "title_canon_sha256": "7f5702151991c8ef614c395adffa3560a99d9553eb61f8ac761478f38c11a364"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.1877",
    "kind": "arxiv",
    "version": 1
  }
}