Pith Number

pith:CRMRALBL

pith:2026:CRMRALBLIJKQBOR6J7V7CRVGTF

not attested not anchored not stored refs pending

A Logic-based Temporal Cohort Discovery Engine: Algorithms, Indices, and Experimental Results on the National Sleep Research Resource

Guo-Qiang Zhang, Licong Cui, Xiaojin Li, Yan Huang

arxiv:2607.21377 v1 · 2026-07-23 · cs.DB · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CRMRALBLIJKQBOR6J7V7CRVGTF}

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	2026-07-24T01:24:29.370510Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1459102c2b425500ba3e4febf146a699487e050a238341d1c3d3e480ca9f45e3

Aliases

arxiv: 2607.21377 · arxiv_version: 2607.21377v1 · doi: 10.48550/arxiv.2607.21377 · pith_short_12: CRMRALBLIJKQ · pith_short_16: CRMRALBLIJKQBOR6 · pith_short_8: CRMRALBL

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/CRMRALBLIJKQBOR6J7V7CRVGTF \
  | 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: 1459102c2b425500ba3e4febf146a699487e050a238341d1c3d3e480ca9f45e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d9f24ae30f32121a3e31581ec56699bdb0d4b034784c62e514b883e166beb1e",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2026-07-23T14:42:17Z",
    "title_canon_sha256": "f74fabce796f7ebf03ce50212f06a0165035d4a1436a5fe56efb66d0ca427c9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.21377",
    "kind": "arxiv",
    "version": 1
  }
}