Pith Number

pith:W7UV2D76

pith:2000:W7UV2D76RA2RXTRGZV4IUQ3H4S

not attested not anchored not stored refs pending

Tagger Evaluation Given Hierarchical Tag Sets

I. Dan Melamed, Philip Resnik

arxiv:cs/0008007 v1 · 2000-08-10 · 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{W7UV2D76RA2RXTRGZV4IUQ3H4S}

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	2026-07-04T14:24:03.945212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7e95d0ffe88351bce26cd788a4367e4be743c06c3a2f8b3822d7b0440ca53b0

Aliases

arxiv: cs/0008007 · arxiv_version: cs/0008007v1 · doi: 10.48550/arxiv.cs/0008007 · pith_short_12: W7UV2D76RA2R · pith_short_16: W7UV2D76RA2RXTRG · pith_short_8: W7UV2D76

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/W7UV2D76RA2RXTRGZV4IUQ3H4S \
  | 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: b7e95d0ffe88351bce26cd788a4367e4be743c06c3a2f8b3822d7b0440ca53b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbf8114e32995b162ada39dceb292b76856b3e8b1fedaa07a8d11a37cabeb3ba",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.CL",
    "submitted_at": "2000-08-10T03:21:33Z",
    "title_canon_sha256": "325ac76c4c6b4e10218cb8108d9a3a0d8d2219f68a5fb5c72241a6c52a0634a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0008007",
    "kind": "arxiv",
    "version": 1
  }
}