Pith Number

pith:25HV4R2S

pith:2020:25HV4R2SVBATKML7LSXPRWCLBC

not attested not anchored not stored refs pending

Comparative analysis of the diffusion of Covid-19 infection in different countries

Fabio Miletto Granozio

arxiv:2003.08661 v1 · 2020-03-18 · 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{25HV4R2SVBATKML7LSXPRWCLBC}

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	2026-07-05T00:49:13.001096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d74f5e4752a84135317f5caef8d84b0895f11182abecb33b6a4d73234cf19c50

Aliases

arxiv: 2003.08661 · arxiv_version: 2003.08661v1 · doi: 10.48550/arxiv.2003.08661 · pith_short_12: 25HV4R2SVBAT · pith_short_16: 25HV4R2SVBATKML7 · pith_short_8: 25HV4R2S

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/25HV4R2SVBATKML7LSXPRWCLBC \
  | 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: d74f5e4752a84135317f5caef8d84b0895f11182abecb33b6a4d73234cf19c50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1bbac970603a6a0100c111556a524b6bbaf3f485b5b665e98bb9027f781e945",
    "cross_cats_sorted": [
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2020-03-18T15:53:57Z",
    "title_canon_sha256": "7f0eac09ac60de641a8decf00190d7f609c9af460310fab91e46af9277c1518f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.08661",
    "kind": "arxiv",
    "version": 1
  }
}