Pith Number

pith:FM7UKTNZ

pith:2016:FM7UKTNZGNZOKFYYDATIQZVSA7

not attested not anchored not stored refs pending

Discovering Effect Modification in an Observational Study of Surgical Mortality at Hospitals with Superior Nursing

Dylan S. Small, Jeffrey H. Silber, Jesse Y. Hsu, Kwonsang Lee, Paul R. Rosenbaum

arxiv:1605.03872 v2 · 2016-05-12 · 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{FM7UKTNZGNZOKFYYDATIQZVSA7}

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	2026-05-18T00:55:28.494613Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b3f454db93372e5171818268866b207fa6cc65be732b5181e24496d1d1ad398

Aliases

arxiv: 1605.03872 · arxiv_version: 1605.03872v2 · doi: 10.48550/arxiv.1605.03872 · pith_short_12: FM7UKTNZGNZO · pith_short_16: FM7UKTNZGNZOKFYY · pith_short_8: FM7UKTNZ

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/FM7UKTNZGNZOKFYYDATIQZVSA7 \
  | 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: 2b3f454db93372e5171818268866b207fa6cc65be732b5181e24496d1d1ad398

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ebdafa74199d6bf9ec22142fee37e54bfb8809b16cff652fa85137125e4826a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2016-05-12T16:06:38Z",
    "title_canon_sha256": "b70fb86dc533d2d96c51937c4e983c8a06d97be4fa1281411ee14f6c89ee72df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.03872",
    "kind": "arxiv",
    "version": 2
  }
}