Pith Number

pith:FKQEBNB4

pith:2021:FKQEBNB4R2JKMO7M23HPSFHQMB

not attested not anchored not stored refs pending

Study on the effects of the restrictive measures for containment of the COVID-19 pandemic on the reproduction number $R_t$ in Italian regions

Antonio Zoccoli, Daniele Pedrini, Dario Menasce, Gianluca Bonifazi, Luca Lista, Mauro Mezzetto, Roberto Spighi

arxiv:2106.02603 v2 · 2021-06-01 · physics.soc-ph · 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{FKQEBNB4R2JKMO7M23HPSFHQMB}

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	2026-07-05T02:59:57.411035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2aa040b43c8e92a63becd6cef914f060670eae3553aab66dbc082cf7ae89fde2

Aliases

arxiv: 2106.02603 · arxiv_version: 2106.02603v2 · doi: 10.48550/arxiv.2106.02603 · pith_short_12: FKQEBNB4R2JK · pith_short_16: FKQEBNB4R2JKMO7M · pith_short_8: FKQEBNB4

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/FKQEBNB4R2JKMO7M23HPSFHQMB \
  | 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: 2aa040b43c8e92a63becd6cef914f060670eae3553aab66dbc082cf7ae89fde2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35c6b879144fdb17c923cb65b4a009eb7f936991ae20c4923b5db2ae5c80b3df",
    "cross_cats_sorted": [
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2021-06-01T09:56:03Z",
    "title_canon_sha256": "4ff3a870877418f5bc01c354ee6989ba19b7a5f7391789a87a40c5618d31c6db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.02603",
    "kind": "arxiv",
    "version": 2
  }
}