Pith Number

pith:PUA52E5X

pith:2002:PUA52E5XU42FB5TCNLRZUSCA4Q

not attested not anchored not stored refs pending

Polynomial-Time Approximation Scheme for Data Broadcast

Claire Kenyon, Neal Young, Nicolas Schabanel

arxiv:cs/0205012 v1 · 2002-05-10 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PUA52E5XU42FB5TCNLRZUSCA4Q}

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	2026-05-18T01:22:44.410597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d01dd13b7a73450f6626ae39a4840e423136590008e189bc0282bf54ab7c308

Aliases

arxiv: cs/0205012 · arxiv_version: cs/0205012v1 · doi: 10.48550/arxiv.cs/0205012 · pith_short_12: PUA52E5XU42F · pith_short_16: PUA52E5XU42FB5TC · pith_short_8: PUA52E5X

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/PUA52E5XU42FB5TCNLRZUSCA4Q \
  | 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: 7d01dd13b7a73450f6626ae39a4840e423136590008e189bc0282bf54ab7c308

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b3a44dcc531cc3db1feb13e5faf1273cf1409582392c674486235a397477599",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "",
    "primary_cat": "cs.DS",
    "submitted_at": "2002-05-10T02:23:47Z",
    "title_canon_sha256": "0d461ef4d99796a13632193847b41ccffefe2e8dabae55a79f024a4f59ed96c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0205012",
    "kind": "arxiv",
    "version": 1
  }
}