Pith Number

pith:PRP7CHAP

pith:2020:PRP7CHAPD6LBLFLZDDHTFMU5EV

not attested not anchored not stored refs pending

Epidemiological study of novel coronavirus (COVID-19)

Jagadish Kumar, K. P. S. S. Hembram

arxiv:2003.11376 v1 · 2020-03-25 · q-bio.PE · physics.app-ph · physics.bio-ph · physics.med-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PRP7CHAPD6LBLFLZDDHTFMU5EV}

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	2026-07-05T02:32:24.938752Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c5ff11c0f1f9615957918cf32b29d256563da95c10fedd242a8982d1d49aee8

Aliases

arxiv: 2003.11376 · arxiv_version: 2003.11376v1 · doi: 10.48550/arxiv.2003.11376 · pith_short_12: PRP7CHAPD6LB · pith_short_16: PRP7CHAPD6LBLFLZ · pith_short_8: PRP7CHAP

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/PRP7CHAPD6LBLFLZDDHTFMU5EV \
  | 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: 7c5ff11c0f1f9615957918cf32b29d256563da95c10fedd242a8982d1d49aee8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8267a7700ab5ae6ddd8e94275996dedcb81a66c42c8f827ff17a20cbbdd7b004",
    "cross_cats_sorted": [
      "physics.app-ph",
      "physics.bio-ph",
      "physics.med-ph"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2020-03-25T12:54:40Z",
    "title_canon_sha256": "3825156640dc9a8bd444d056b8e0f48758f5356358f89c9d86abb1790519fad7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.11376",
    "kind": "arxiv",
    "version": 1
  }
}