Pith Number

pith:F4JXPZ77

pith:2020:F4JXPZ77VMDVZMUYVDWMCNJHAK

not attested not anchored not stored refs pending

Unpacking the Drop in COVID-19 Case Fatality Rates: A Study of National and Florida Line-Level Data

Cheng cheng, Helen Zhou, Jeremy C. Weiss, Zachary C. Lipton

arxiv:2012.04825 v2 · 2020-12-09 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F4JXPZ77VMDVZMUYVDWMCNJHAK}

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	2026-07-05T01:58:44.314381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f1377e7ffab075cb298a8ecc1352702849ab4ae370a971d83d9ae4ed01e549a

Aliases

arxiv: 2012.04825 · arxiv_version: 2012.04825v2 · doi: 10.48550/arxiv.2012.04825 · pith_short_12: F4JXPZ77VMDV · pith_short_16: F4JXPZ77VMDVZMUY · pith_short_8: F4JXPZ77

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/F4JXPZ77VMDVZMUYVDWMCNJHAK \
  | 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: 2f1377e7ffab075cb298a8ecc1352702849ab4ae370a971d83d9ae4ed01e549a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4bd54485e9e1e40dcf3000a66f23c3867e7bfe17e44fdbdf60e081d0cd100bf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2020-12-09T02:25:48Z",
    "title_canon_sha256": "aa91770f0a41f08f2d5cdcfd2dedef55626e7962901deda9ef154919bffa59ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.04825",
    "kind": "arxiv",
    "version": 2
  }
}