Pith Number

pith:5PQ2Z7RL

pith:2018:5PQ2Z7RLXEOYD5B67SRXCB2H6L

not attested not anchored not stored refs pending

Predicting pregnancy using large-scale data from a women's health tracking mobile application

Bo Liu, Daniel Thomas, Emma Pierson, Jure Leskovec, Laura Symul, Shuyang Shi, Yongshang Wu

arxiv:1812.02222 v2 · 2018-12-05 · stat.AP · cs.CY · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5PQ2Z7RLXEOYD5B67SRXCB2H6L}

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	2026-05-17T23:50:02.395892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ebe1acfe2bb91d81f43efca3710747f2c8f0b19989f65dea43f5b2945d5f54ef

Aliases

arxiv: 1812.02222 · arxiv_version: 1812.02222v2 · doi: 10.48550/arxiv.1812.02222 · pith_short_12: 5PQ2Z7RLXEOY · pith_short_16: 5PQ2Z7RLXEOYD5B6 · pith_short_8: 5PQ2Z7RL

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/5PQ2Z7RLXEOYD5B67SRXCB2H6L \
  | 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: ebe1acfe2bb91d81f43efca3710747f2c8f0b19989f65dea43f5b2945d5f54ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c0aad8aa7d1fb970eb11fbaa0eb25e860b07a6fb92dd4cbc3128b363a8a9c71",
    "cross_cats_sorted": [
      "cs.CY",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2018-12-05T20:58:14Z",
    "title_canon_sha256": "031ae4fc9b8ed15a0db2a613b90622e6cd8ef7e49a76cff4457ad65696ace8d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.02222",
    "kind": "arxiv",
    "version": 2
  }
}