Pith Number

pith:J7LF6DMW

pith:2015:J7LF6DMW545SDOXRA4PW6OMVRE

not attested not anchored not stored refs pending

Biased sampling designs to improve research efficiency: Factors influencing pulmonary function over time in children with asthma

Jonathan S. Schildcrout, Leila R. Zelnick, Patrick J. Heagerty, Paul J. Rathouz, Shawn P. Garbett

arxiv:1509.04824 v1 · 2015-09-16 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J7LF6DMW545SDOXRA4PW6OMVRE}

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	2026-05-18T01:32:51.610207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fd65f0d96ef3b21baf1071f6f3995890fbb4d30b34adab88aa1eddfedd1876b

Aliases

arxiv: 1509.04824 · arxiv_version: 1509.04824v1 · doi: 10.48550/arxiv.1509.04824 · pith_short_12: J7LF6DMW545S · pith_short_16: J7LF6DMW545SDOXR · pith_short_8: J7LF6DMW

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/J7LF6DMW545SDOXRA4PW6OMVRE \
  | 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: 4fd65f0d96ef3b21baf1071f6f3995890fbb4d30b34adab88aa1eddfedd1876b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38f54b1aa6d84e40766d58bc7beee42ae6db4cb962098f9441ab5ce5819fd044",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2015-09-16T06:44:18Z",
    "title_canon_sha256": "542232d30ad4288bed6bd3a43905244309ef54a4d7a44f43a7170ffa3d80e529"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.04824",
    "kind": "arxiv",
    "version": 1
  }
}