Pith Number

pith:HU4IVEUY

pith:2022:HU4IVEUYEU3H7H2RIA23YHM4UR

not attested not anchored not stored refs pending

Quadratic growth during the COVID-19 pandemic: merging hotspots and reinfections

Axel Brandenburg

arxiv:2206.15459 v2 · 2022-06-30 · 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{HU4IVEUYEU3H7H2RIA23YHM4UR}

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	2026-07-05T05:40:47.492417Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d388a929825367f9f514035bc1d9ca46a880320c840d4f5f04eb2a76044edec

Aliases

arxiv: 2206.15459 · arxiv_version: 2206.15459v2 · doi: 10.48550/arxiv.2206.15459 · pith_short_12: HU4IVEUYEU3H · pith_short_16: HU4IVEUYEU3H7H2R · pith_short_8: HU4IVEUY

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/HU4IVEUYEU3H7H2RIA23YHM4UR \
  | 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: 3d388a929825367f9f514035bc1d9ca46a880320c840d4f5f04eb2a76044edec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce7c03c7542cc53270f78601bd58fcedc167ccfc9894702d003dccd05a1fc343",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2022-06-30T17:53:08Z",
    "title_canon_sha256": "08de415de15d1c80d4d4323fa9483cf6c8bd0932fc84417fa63cc41a9a13dbca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2206.15459",
    "kind": "arxiv",
    "version": 2
  }
}