Pith Number

pith:4JOJAB3N

pith:2018:4JOJAB3NR7D7WFRAVBTYAGLW2S

not attested not anchored not stored refs pending

A novel approach to estimate the Cox model with temporal covariates and its application to medical cost data

Xiaobing Zhao, Xiaoqi Zhang, Yanqiao Zheng

arxiv:1802.00665 v1 · 2018-02-02 · 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{4JOJAB3NR7D7WFRAVBTYAGLW2S}

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	2026-05-18T00:24:32.651774Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e25c90076d8fc7fb1620a867801976d4897e624e23f702929e845c5856a88d42

Aliases

arxiv: 1802.00665 · arxiv_version: 1802.00665v1 · doi: 10.48550/arxiv.1802.00665 · pith_short_12: 4JOJAB3NR7D7 · pith_short_16: 4JOJAB3NR7D7WFRA · pith_short_8: 4JOJAB3N

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/4JOJAB3NR7D7WFRAVBTYAGLW2S \
  | 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: e25c90076d8fc7fb1620a867801976d4897e624e23f702929e845c5856a88d42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e94f6749a6293578fca2e4ef55b537d8ddc1b569ce6a212de2105c40acbc26f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2018-02-02T12:53:31Z",
    "title_canon_sha256": "acb338d5496053b00adc95c1ed8389b19365e4cf8bfee3fdded36c8d7b9b68af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.00665",
    "kind": "arxiv",
    "version": 1
  }
}