Pith Number

pith:JBZHT2FL

pith:2021:JBZHT2FLRPPIKV476SDLTBIITG

not attested not anchored not stored refs pending

Combining Cox Regressions Across a Heterogeneous Distributed Research Network Facing Small and Zero Counts

David Madigan, Marc A. Suchard, Martijn J. Schuemie, Yong Chen

arxiv:2101.01551 v1 · 2021-01-05 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JBZHT2FLRPPIKV476SDLTBIITG}

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	2026-07-05T02:04:51.000103Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

487279e8ab8bde85579ff486b985089981b404c194e36c522fac2db7fd93203a

Aliases

arxiv: 2101.01551 · arxiv_version: 2101.01551v1 · doi: 10.48550/arxiv.2101.01551 · pith_short_12: JBZHT2FLRPPI · pith_short_16: JBZHT2FLRPPIKV47 · pith_short_8: JBZHT2FL

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/JBZHT2FLRPPIKV476SDLTBIITG \
  | 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: 487279e8ab8bde85579ff486b985089981b404c194e36c522fac2db7fd93203a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4968c7aff52b199e515e7194982b67b094cb18e13f787bebd2b81c75324946a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2021-01-05T14:35:36Z",
    "title_canon_sha256": "f01e853190e0d277ff930488135f8fe07a3958323c04f24856f0342f3ad363cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.01551",
    "kind": "arxiv",
    "version": 1
  }
}