Pith Number

pith:M2K7ZAIG

pith:2021:M2K7ZAIG7742LU7CQVJJVLFB4U

not attested not anchored not stored refs pending

COVID-19 case data for Italy stratified by age class

Giulia Fracastoro, Giuseppe Calafiore

arxiv:2104.06199 v1 · 2021-04-13 · stat.ML · 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{M2K7ZAIG7742LU7CQVJJVLFB4U}

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	2026-07-05T02:31:29.913230Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6695fc8106fff9a5d3e285529aaca1e50361dc882f4dc82a10dfd55658ab6f80

Aliases

arxiv: 2104.06199 · arxiv_version: 2104.06199v1 · doi: 10.48550/arxiv.2104.06199 · pith_short_12: M2K7ZAIG7742 · pith_short_16: M2K7ZAIG7742LU7C · pith_short_8: M2K7ZAIG

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/M2K7ZAIG7742LU7CQVJJVLFB4U \
  | 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: 6695fc8106fff9a5d3e285529aaca1e50361dc882f4dc82a10dfd55658ab6f80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f0603bd46815b95df7c56ade25d0cfa8d2f8169b234a1cea45b11c615440812",
    "cross_cats_sorted": [
      "stat.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2021-04-13T13:51:20Z",
    "title_canon_sha256": "990eac1bb34b8df36d0cbdbb8d12fd354ea2dc85cb6af48194b8c4a801840dd5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.06199",
    "kind": "arxiv",
    "version": 1
  }
}