Pith Number

pith:JJB4EZLP

pith:2020:JJB4EZLPC4BOLLMPNVJDV2RS6W

not attested not anchored not stored refs pending

An apparatus for nondestructive and rapid comparison of mask approaches in defense against infected respiratory aerosols

David Daggett, Donal Sheets, Erin Curry, Ibrahim Elali, Ilya Sochnikov, Jamie Shaw, Jason N. Hancock, Michael Baldwin

arxiv:2006.02470 v1 · 2020-06-03 · physics.ins-det · 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{JJB4EZLPC4BOLLMPNVJDV2RS6W}

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	2026-07-05T01:07:56.867988Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a43c2656f1702e5ad8f6d523aea32f587a24ed658b9b113c1360bb429b9425e

Aliases

arxiv: 2006.02470 · arxiv_version: 2006.02470v1 · doi: 10.48550/arxiv.2006.02470 · pith_short_12: JJB4EZLPC4BO · pith_short_16: JJB4EZLPC4BOLLMP · pith_short_8: JJB4EZLP

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/JJB4EZLPC4BOLLMPNVJDV2RS6W \
  | 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: 4a43c2656f1702e5ad8f6d523aea32f587a24ed658b9b113c1360bb429b9425e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5a29c0331510f5f8b48cdcb5991ab8c1345ca6e59c48916c6617e4f5aa3c0ed",
    "cross_cats_sorted": [
      "physics.med-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2020-06-03T18:26:24Z",
    "title_canon_sha256": "e57233176bea14c6b29395efc534fbe2d87657fbb90c7ab20963cd91516dafdc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.02470",
    "kind": "arxiv",
    "version": 1
  }
}