Pith Number

pith:Y5CED5CU

pith:2002:Y5CED5CUAYB3K2CAUZB7SHGFNP

not attested not anchored not stored refs pending

An Integrated Framework for Treebanks and Multilayer Annotations

Scott Cotton, Steven Bird

arxiv:cs/0204007 v1 · 2002-04-03 · 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{Y5CED5CUAYB3K2CAUZB7SHGFNP}

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	2026-07-04T14:24:16.476761Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c74441f4540603b56840a643f91cc56bdb9a30910da935760f2937b3e3544e0f

Aliases

arxiv: cs/0204007 · arxiv_version: cs/0204007v1 · doi: 10.48550/arxiv.cs/0204007 · pith_short_12: Y5CED5CUAYB3 · pith_short_16: Y5CED5CUAYB3K2CA · pith_short_8: Y5CED5CU

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/Y5CED5CUAYB3K2CAUZB7SHGFNP \
  | 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: c74441f4540603b56840a643f91cc56bdb9a30910da935760f2937b3e3544e0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cb2ae26508fe660ab46eb92f6ab7d3bacc9d144a9be1b6294bb46cdec14ee23",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.CL",
    "submitted_at": "2002-04-03T18:55:01Z",
    "title_canon_sha256": "2e9a39290cf4998d903bd8c542a3da49f495e5c625bc94b76e6e6910850bbefa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0204007",
    "kind": "arxiv",
    "version": 1
  }
}