Pith Number

pith:O43QNRRY

pith:2019:O43QNRRY3W43UJHZPP5TLZJ5LS

not attested not anchored not stored refs pending

Automatically Identifying Comparator Groups on Twitter for Digital Epidemiology of Pregnancy Outcomes

Abeselom Gebreyesus, Ari Z. Klein, Graciela Gonzalez-Hernandez

arxiv:1908.06015 v1 · 2019-08-16 · cs.CL · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O43QNRRY3W43UJHZPP5TLZJ5LS}

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	2026-07-04T23:57:55.266599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

773706c638ddb9ba24f97bfb35e53d5c9e7006a6629e1a9ade43da9b12e53c24

Aliases

arxiv: 1908.06015 · arxiv_version: 1908.06015v1 · doi: 10.48550/arxiv.1908.06015 · pith_short_12: O43QNRRY3W43 · pith_short_16: O43QNRRY3W43UJHZ · pith_short_8: O43QNRRY

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/O43QNRRY3W43UJHZPP5TLZJ5LS \
  | 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: 773706c638ddb9ba24f97bfb35e53d5c9e7006a6629e1a9ade43da9b12e53c24

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2409e8babc6fa6f128011c69b2861467024ad11958c598bf9e227a52cee77906",
    "cross_cats_sorted": [
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-08-16T15:21:34Z",
    "title_canon_sha256": "caa4b05d0c1a45b2cf852200e7dd069f9f92b72f796ec9721d7b5077f2ec6dca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.06015",
    "kind": "arxiv",
    "version": 1
  }
}