Pith Number

pith:NLCTXATK

pith:2019:NLCTXATKJQYQJM2MVT3L2IYJKJ

not attested not anchored not stored refs pending

Improved encoding and decoding for non-adaptive threshold group testing

Isao Echizen, Mahdi Cheraghchi, Minoru Kuribayashi, Thach V. Bui

arxiv:1901.02283 v1 · 2019-01-08 · 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{NLCTXATKJQYQJM2MVT3L2IYJKJ}

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	2026-05-17T23:56:43.648470Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ac53b826a4c3104b34cacf6bd230952586e76ccc7adf0c57d6093855494024b

Aliases

arxiv: 1901.02283 · arxiv_version: 1901.02283v1 · doi: 10.48550/arxiv.1901.02283 · pith_short_12: NLCTXATKJQYQ · pith_short_16: NLCTXATKJQYQJM2M · pith_short_8: NLCTXATK

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/NLCTXATKJQYQJM2MVT3L2IYJKJ \
  | 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: 6ac53b826a4c3104b34cacf6bd230952586e76ccc7adf0c57d6093855494024b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d170af67616e065d8dd3fa58373026268b630bf7c24b8df4d247f17537ebeadb",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-01-08T12:34:31Z",
    "title_canon_sha256": "f4ef6a00ad52df16673a3b4aa0d3cf239828c607275e35092e91a73776a65cd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.02283",
    "kind": "arxiv",
    "version": 1
  }
}