Pith Number

pith:YZ3H3RZJ

pith:2018:YZ3H3RZJBC6RTZ3BRAKZPG72QT

not attested not anchored not stored refs pending

National PM2.5 and NO2 Exposure Models for China Based on Land Use Regression, Satellite Measurements, and Universal Kriging

Adam A. Szpiro, Hao Xu, Julian D. Marshall, Matthew J. Bechle, Meng Wang, Sverre Vedal, Yuqi Bai

arxiv:1808.09126 v1 · 2018-08-28 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YZ3H3RZJBC6RTZ3BRAKZPG72QT}

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	2026-05-18T00:07:04.423456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6767dc72908bd19e7618815979bfa84f80ce4afefd0d9ffb915cbd2cf70f364

Aliases

arxiv: 1808.09126 · arxiv_version: 1808.09126v1 · doi: 10.48550/arxiv.1808.09126 · pith_short_12: YZ3H3RZJBC6R · pith_short_16: YZ3H3RZJBC6RTZ3B · pith_short_8: YZ3H3RZJ

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/YZ3H3RZJBC6RTZ3BRAKZPG72QT \
  | 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: c6767dc72908bd19e7618815979bfa84f80ce4afefd0d9ffb915cbd2cf70f364

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e850990d34097ff4653a9ddcb81878589e6e593e643f52e1080e309177a54b55",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2018-08-28T05:36:17Z",
    "title_canon_sha256": "0de8a5bbf68cd5ede6a663526e37863b44860389b30ccf0b701d16499713ae1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.09126",
    "kind": "arxiv",
    "version": 1
  }
}