Pith Number

pith:WUZ6RXFI

pith:2018:WUZ6RXFIAEIBBNE5UWKNPDL2OA

not attested not anchored not stored refs pending

Efficient (nonrandom) construction and decoding for non-adaptive group testing

Isao Echizen, Minoru Kuribayashi, Roghayyeh Haghvirdinezhad, Tetsuya Kojima, Thach V. Bui

arxiv:1804.03819 v4 · 2018-04-11 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WUZ6RXFIAEIBBNE5UWKNPDL2OA}

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	2026-07-05T00:29:35.466332Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b533e8dca8011010b49da594d78d7a702f5668ea28131fcecebcd4afdfb577d0

Aliases

arxiv: 1804.03819 · arxiv_version: 1804.03819v4 · doi: 10.48550/arxiv.1804.03819 · pith_short_12: WUZ6RXFIAEIB · pith_short_16: WUZ6RXFIAEIBBNE5 · pith_short_8: WUZ6RXFI

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/WUZ6RXFIAEIBBNE5UWKNPDL2OA \
  | 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: b533e8dca8011010b49da594d78d7a702f5668ea28131fcecebcd4afdfb577d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e195f0dbc1cdae4cbb4417e5ea1bf35c23b4ca22718d131e0c17702a99c688a5",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-04-11T05:46:17Z",
    "title_canon_sha256": "51337606db137b3ad1099f7ca6f86d583dfa20181efc03bf56e53314c44c971f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03819",
    "kind": "arxiv",
    "version": 4
  }
}