Pith Number

pith:6LMENKJA

pith:2013:6LMENKJAQ2HMDZ3SDP7BKCJPS4

not attested not anchored not stored refs pending

Parameter estimation in Cox models with missing failure indicators and the OPPERA study

Eric Bair, Gary Slade, Jianwen Cai, Naomi Brownstein

arxiv:1304.3839 v4 · 2013-04-13 · stat.ME · 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{6LMENKJAQ2HMDZ3SDP7BKCJPS4}

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	2026-05-18T01:37:16.404668Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2d846a920868ec1e7721bfe15092f97143652cc68e64b60159258eab9cccd87

Aliases

arxiv: 1304.3839 · arxiv_version: 1304.3839v4 · doi: 10.48550/arxiv.1304.3839 · pith_short_12: 6LMENKJAQ2HM · pith_short_16: 6LMENKJAQ2HMDZ3S · pith_short_8: 6LMENKJA

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/6LMENKJAQ2HMDZ3SDP7BKCJPS4 \
  | 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: f2d846a920868ec1e7721bfe15092f97143652cc68e64b60159258eab9cccd87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b37453757d9cbd78da7ae6ef2b7bcfa1288a9ac74a96b63af8962cc3d00fd489",
    "cross_cats_sorted": [
      "stat.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2013-04-13T20:14:49Z",
    "title_canon_sha256": "8013bbe3747d31ecb6237bdfb3e4345c55fa7b87ed024864e87875699b9cfea5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.3839",
    "kind": "arxiv",
    "version": 4
  }
}