Pith Number

pith:Y44PCROC

pith:2000:Y44PCROCSHCB4CRBUHSCEUBAZI

not attested not anchored not stored refs pending

A Formal Framework for Linguistic Annotation (revised version)

Mark Liberman, Steven Bird

arxiv:cs/0010033 v1 · 2000-10-26 · cs.CL · cs.DB · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y44PCROCSHCB4CRBUHSCEUBAZI}

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	2026-07-04T14:24:05.364446Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c738f145c291c41e0a21a1e4225020ca3556dd9ae5dc7a56605bfce93f597575

Aliases

arxiv: cs/0010033 · arxiv_version: cs/0010033v1 · doi: 10.48550/arxiv.cs/0010033 · pith_short_12: Y44PCROCSHCB · pith_short_16: Y44PCROCSHCB4CRB · pith_short_8: Y44PCROC

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/Y44PCROCSHCB4CRBUHSCEUBAZI \
  | 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: c738f145c291c41e0a21a1e4225020ca3556dd9ae5dc7a56605bfce93f597575

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ee6241ebb8fffec4b09f0260d5b2b3a5e1249accfa79414203f4d40af13c99b",
    "cross_cats_sorted": [
      "cs.DB",
      "cs.DS"
    ],
    "license": "",
    "primary_cat": "cs.CL",
    "submitted_at": "2000-10-26T17:42:30Z",
    "title_canon_sha256": "cadf422b16dee0efef9f9d29abf63b6addf85e82da830a1dc5d864fc9e002b26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0010033",
    "kind": "arxiv",
    "version": 1
  }
}