Pith Number

pith:XYHN6W6B

pith:2019:XYHN6W6BORKH3CG7ZAPR3NIP3L

not attested not anchored not stored refs pending

Slowing-down reduction and Possible Reversal Trend of Tropospheric NO2 over China during 2016 to 2019

Haixu Bo, Rui Li, Yu Wang

arxiv:1907.06525 v1 · 2019-07-15 · 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{XYHN6W6BORKH3CG7ZAPR3NIP3L}

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	2026-05-17T23:40:37.476729Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be0edf5bc174547d88dfc81f1db50fdaf633eba915ce14d2eaccdb5c183d663e

Aliases

arxiv: 1907.06525 · arxiv_version: 1907.06525v1 · doi: 10.48550/arxiv.1907.06525 · pith_short_12: XYHN6W6BORKH · pith_short_16: XYHN6W6BORKH3CG7 · pith_short_8: XYHN6W6B

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/XYHN6W6BORKH3CG7ZAPR3NIP3L \
  | 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: be0edf5bc174547d88dfc81f1db50fdaf633eba915ce14d2eaccdb5c183d663e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62317f2394ea1dd35077a0f308206454d6cab292b1cb01ba6d7f9d97f86e4c32",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2019-07-15T14:40:09Z",
    "title_canon_sha256": "3e903a94f5c217030f9abe7a345d36f8799b8255f13028b0bd0822dc5caf709b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.06525",
    "kind": "arxiv",
    "version": 1
  }
}