Pith Number

pith:4CDW5P6B

pith:2021:4CDW5P6B55HY4M5J647PDLMLDV

not attested not anchored not stored refs pending

Crowdsourcing County-Level Data on Early COVID-19 Policy Interventions in the United States: Technical Report

Achla Marathe, Jacob Ritchie, J.D. Zamfirescu-Pereira, Madhav Marathe, Mark Whiting, Michael S. Bernstein, Sorathan Chaturapruek, Stephen Eubank

arxiv:2112.08279 v1 · 2021-12-15 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4CDW5P6B55HY4M5J647PDLMLDV}

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	2026-07-05T03:41:19.882998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0876ebfc1ef4f8e33a9f73ef1ad8b1d546e9c57ba1850db8486a354d8a84881

Aliases

arxiv: 2112.08279 · arxiv_version: 2112.08279v1 · doi: 10.48550/arxiv.2112.08279 · pith_short_12: 4CDW5P6B55HY · pith_short_16: 4CDW5P6B55HY4M5J · pith_short_8: 4CDW5P6B

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/4CDW5P6B55HY4M5J647PDLMLDV \
  | 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: e0876ebfc1ef4f8e33a9f73ef1ad8b1d546e9c57ba1850db8486a354d8a84881

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4074aa6ea49526af8ec7628bf15440aa353a302a7dce920f8162aeb290a30089",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2021-12-15T17:16:00Z",
    "title_canon_sha256": "2a8bf017a818315bfe1bfbd3e61783cab4518131729ab094822dd67613ea0ba0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.08279",
    "kind": "arxiv",
    "version": 1
  }
}