Pith Number

pith:23HGRY2L

pith:2019:23HGRY2LVURLXZRKU322E2QSPF

not attested not anchored not stored refs pending

Mapping PM2.5 concentration at sub-km level resolution: a dual-scale retrieval method

Huanfeng Shen, Liangpei Zhang, Linwei Yue, Qiangqiang Yuan, Qianqian Yang

arxiv:1907.03095 v1 · 2019-07-06 · physics.ao-ph · eess.IV · physics.geo-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{23HGRY2LVURLXZRKU322E2QSPF}

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	2026-05-17T23:41:16.877808Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6ce68e34bad22bbe62aa6f5a26a1279636e07b3d67751b22c3c7244c7c2e41c

Aliases

arxiv: 1907.03095 · arxiv_version: 1907.03095v1 · doi: 10.48550/arxiv.1907.03095 · pith_short_12: 23HGRY2LVURL · pith_short_16: 23HGRY2LVURLXZRK · pith_short_8: 23HGRY2L

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/23HGRY2LVURLXZRKU322E2QSPF \
  | 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: d6ce68e34bad22bbe62aa6f5a26a1279636e07b3d67751b22c3c7244c7c2e41c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92d2c36f1d40ab16b20431e9be9f7e6249650ddb9aee2aaffe216eb22c4c0c18",
    "cross_cats_sorted": [
      "eess.IV",
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2019-07-06T08:31:26Z",
    "title_canon_sha256": "01714b825846a0cdb10853aff26ffb81ede5f794bf4a73a65ae7b1ce949292a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.03095",
    "kind": "arxiv",
    "version": 1
  }
}