Pith Number

pith:SPCW3I2Q

pith:2011:SPCW3I2QEA32UNQLVZFPAOWE2C

not attested not anchored not stored refs pending

Fence - An Efficient Parser with Ambiguity Support for Model-Driven Language Specification

Fernando Berzal, Francisco J. Cortijo, Luis Quesada

arxiv:1107.4687 v2 · 2011-07-23 · 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{SPCW3I2QEA32UNQLVZFPAOWE2C}

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	2026-05-18T04:11:31.479615Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93c56da3502037aa360bae4af03ac4d0896fe1160dbd4ba1e613b38a11e99f0c

Aliases

arxiv: 1107.4687 · arxiv_version: 1107.4687v2 · doi: 10.48550/arxiv.1107.4687 · pith_short_12: SPCW3I2QEA32 · pith_short_16: SPCW3I2QEA32UNQL · pith_short_8: SPCW3I2Q

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/SPCW3I2QEA32UNQLVZFPAOWE2C \
  | 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: 93c56da3502037aa360bae4af03ac4d0896fe1160dbd4ba1e613b38a11e99f0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7ac4a6fc02fc3ec8ed4ef9ef6161f7dc4d564f8349bb037990c53456326ad5b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2011-07-23T12:56:02Z",
    "title_canon_sha256": "23ea3445851d22b5bc71af4c351637e5ddec3e7229af56d1eccbe5e9c0f087ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.4687",
    "kind": "arxiv",
    "version": 2
  }
}