Pith Number

pith:3AP63WOG

pith:2025:3AP63WOG3XLM6N3JWPZMYMLEBE

not attested not anchored not stored refs pending

Start from the End: A Framework for Computational Policy Exploration to Inform Effective and Geospatially Consistent Interventions applied to COVID-19 in St. Louis

David O'Gara, Matthew D. Haslam, Matt Kasman, Ross A. Hammond

arxiv:2507.10870 v2 · 2025-07-15 · stat.AP · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3AP63WOG3XLM6N3JWPZMYMLEBE}

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	2026-07-05T11:43:13.563030Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d81fedd9c6ddd6cf3769b3f2cc31640937d2e2d3e0d4e664f4a96d6cb7ac01a7

Aliases

arxiv: 2507.10870 · arxiv_version: 2507.10870v2 · doi: 10.48550/arxiv.2507.10870 · pith_short_12: 3AP63WOG3XLM · pith_short_16: 3AP63WOG3XLM6N3J · pith_short_8: 3AP63WOG

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/3AP63WOG3XLM6N3JWPZMYMLEBE \
  | 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: d81fedd9c6ddd6cf3769b3f2cc31640937d2e2d3e0d4e664f4a96d6cb7ac01a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a176491d39dfd95394e52c9df0dfa6932e0e7968443fa1e2a7f09a70c2d7c4a",
    "cross_cats_sorted": [
      "stat.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2025-07-15T00:21:23Z",
    "title_canon_sha256": "758499313930de3fd089753c87745aa0eefacfe9652f6cdabddc5a51877196ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.10870",
    "kind": "arxiv",
    "version": 2
  }
}