Pith Number

pith:PN4GS6A6

pith:2020:PN4GS6A6ICZDRCIQEPVDPGS7NW

not attested not anchored not stored refs pending

The Novel Coronavirus, 2019-nCoV, is Highly Contagious and More Infectious Than Initially Estimated

Chonggang Xu, Ethan Romero-Severson, Nicolas W. Hengartner, Ruian Ke, Steven Sanche, Yen Ting Lin

arxiv:2002.03268 v1 · 2020-02-09 · 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{PN4GS6A6ICZDRCIQEPVDPGS7NW}

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	2026-07-05T00:39:20.881041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b7869781e40b238891023ea379a5f6d8506cbf7b87c099c254b678b5e108a56

Aliases

arxiv: 2002.03268 · arxiv_version: 2002.03268v1 · doi: 10.48550/arxiv.2002.03268 · pith_short_12: PN4GS6A6ICZD · pith_short_16: PN4GS6A6ICZDRCIQ · pith_short_8: PN4GS6A6

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/PN4GS6A6ICZDRCIQEPVDPGS7NW \
  | 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: 7b7869781e40b238891023ea379a5f6d8506cbf7b87c099c254b678b5e108a56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5b13002ee9ef5cf3bac922238a9b5416bd4afd6aa7c42bcb523e3aa067c4c6a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2020-02-09T02:42:18Z",
    "title_canon_sha256": "39dc9e2e587d19067f32b7da200948f2ba22863d1fd1a59ce46217cfda78e028"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.03268",
    "kind": "arxiv",
    "version": 1
  }
}