Pith Number

pith:2GW4ONQX

pith:2000:2GW4ONQXRUXFNL6JN4PWC7K2SP

not attested not anchored not stored refs pending

Automatic Classification of Text Databases through Query Probing

Luis Gravano, Mehran Sahami, Panagiotis Ipeirotis

arxiv:cs/0003043 v1 · 2000-03-09 · cs.DB · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2GW4ONQXRUXFNL6JN4PWC7K2SP}

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	2026-07-04T14:24:01.294684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1adc736178d2e56afc96f1f617d5a93ddeae4d9446a5d6f6d90ca281d98cc6e

Aliases

arxiv: cs/0003043 · arxiv_version: cs/0003043v1 · doi: 10.48550/arxiv.cs/0003043 · pith_short_12: 2GW4ONQXRUXF · pith_short_16: 2GW4ONQXRUXFNL6J · pith_short_8: 2GW4ONQX

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/2GW4ONQXRUXFNL6JN4PWC7K2SP \
  | 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: d1adc736178d2e56afc96f1f617d5a93ddeae4d9446a5d6f6d90ca281d98cc6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "998cab61c7af655dc28c22ab2e2a9df82d71bdf8a4ed0e36b25b09dce185fcc5",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "",
    "primary_cat": "cs.DB",
    "submitted_at": "2000-03-09T04:01:22Z",
    "title_canon_sha256": "8340d243b6f5b4d9c17f170eb0ab40ee996e991eb9b340e68900d20177e9abdd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0003043",
    "kind": "arxiv",
    "version": 1
  }
}