Pith Number

pith:R7QNL2VJ

pith:2020:R7QNL2VJH3ZVRGOIAEBF37FRW3

not attested not anchored not stored refs pending

The impact of a nation-wide lockdown on COVID-19 transmissibility in Italy

Alberto Mateo Urdiales, Andrea Piccioli, Antonino Bella, COVID-19 working group, Filippo Trentini, Flavia Riccardo, Giorgio Guzzetta, Giovanni Rezza, Marco Ajelli, Maria Fenicia Vescio, Martina Del Manso, Massimo Fabiani, Patrizio Pezzotti, Piero Poletti, Silvio Brusaferro, Stefania Bellino, Stefano Boros, Stefano Merler, Valentina Marziano, Xanthi Andrianou

arxiv:2004.12338 v1 · 2020-04-26 · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R7QNL2VJH3ZVRGOIAEBF37FRW3}

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	2026-07-05T00:58:14.545213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fe0d5eaa93ef35899c801025dfcb1b6e5927d1edcc91dab11896487f7411cb5

Aliases

arxiv: 2004.12338 · arxiv_version: 2004.12338v1 · doi: 10.48550/arxiv.2004.12338 · pith_short_12: R7QNL2VJH3ZV · pith_short_16: R7QNL2VJH3ZVRGOI · pith_short_8: R7QNL2VJ

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/R7QNL2VJH3ZVRGOIAEBF37FRW3 \
  | 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: 8fe0d5eaa93ef35899c801025dfcb1b6e5927d1edcc91dab11896487f7411cb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d9278a18a84c99ebbd24c32b6c3f16cdb8601c6355714d3cbe38953208910e8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2020-04-26T10:04:31Z",
    "title_canon_sha256": "3ae1a504a51b2032ed9f762c001382fa7641506b151bedb0f93d3f895311d7bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.12338",
    "kind": "arxiv",
    "version": 1
  }
}