Pith Number

pith:32E66YKX

pith:2020:32E66YKXUZNU5LC3GSYA25VA6O

not attested not anchored not stored refs pending

To mask or not to mask: Modeling the potential for face mask use by the general public to curtail the COVID-19 pandemic

Abba B. Gumel, Enahoro Iboi, Eric Kostelich, Keenan Eikenberry, Marina Mancuso, Steffen E. Eikenberry, Tin Phan, Yang Kuang

arxiv:2004.03251 v1 · 2020-04-07 · q-bio.PE · q-bio.QM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{32E66YKXUZNU5LC3GSYA25VA6O}

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	2026-07-05T00:59:43.599907Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de89ef6157a65b4eac5b34b00d76a0f3bf7368f96aa150e942fba979abeee8a7

Aliases

arxiv: 2004.03251 · arxiv_version: 2004.03251v1 · doi: 10.48550/arxiv.2004.03251 · pith_short_12: 32E66YKXUZNU · pith_short_16: 32E66YKXUZNU5LC3 · pith_short_8: 32E66YKX

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/32E66YKXUZNU5LC3GSYA25VA6O \
  | 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: de89ef6157a65b4eac5b34b00d76a0f3bf7368f96aa150e942fba979abeee8a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b93b1750e5964d305fa03d3c58a93d55eabf8a40a7f2b845d27b25b79f48d059",
    "cross_cats_sorted": [
      "q-bio.QM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2020-04-07T10:41:30Z",
    "title_canon_sha256": "97ca8856d79a96ba503fdaa7158ed12d1f35e6fd4af74fb896b39c55a81f0885"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.03251",
    "kind": "arxiv",
    "version": 1
  }
}