Pith Number

pith:3H5C7YWL

pith:2018:3H5C7YWL3G5A56C72S72LUNNLF

not attested not anchored not stored refs pending

Prediction of Daily PM2.5 Concentration in China Using Data-Driven Ordinary Differential Equations

Haiyan Wang, Shuhua Zhang, Yufang Wang

arxiv:1808.01867 v2 · 2018-07-21 · physics.ao-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{3H5C7YWL3G5A56C72S72LUNNLF}

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	2026-05-18T00:08:20.280212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9fa2fe2cbd9ba0ef85fd4bfa5d1ad5946d245506c623e3826585d4acc654460

Aliases

arxiv: 1808.01867 · arxiv_version: 1808.01867v2 · doi: 10.48550/arxiv.1808.01867 · pith_short_12: 3H5C7YWL3G5A · pith_short_16: 3H5C7YWL3G5A56C7 · pith_short_8: 3H5C7YWL

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/3H5C7YWL3G5A56C72S72LUNNLF \
  | 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: d9fa2fe2cbd9ba0ef85fd4bfa5d1ad5946d245506c623e3826585d4acc654460

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf1035f6fd4d218b23df8b77ef7e60c142d988e32f9cf7688edd33a701b23e0e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2018-07-21T13:25:52Z",
    "title_canon_sha256": "881e431e4d31e284f7b245314d52ef921971f29ab64e75a69f1831d5a47b9db8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.01867",
    "kind": "arxiv",
    "version": 2
  }
}