Pith Number

pith:LI556DPB

pith:2026:LI556DPBZ74ZNYXZSSQSA4P6K7

not attested not anchored not stored refs pending

Population size and centrality effects on NO2 air pollution across and within European cities

Geoffrey Caruso, R\'emi Lemoy, Yufei Wei

arxiv:2605.28672 v1 · 2026-05-27 · physics.soc-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{LI556DPBZ74ZNYXZSSQSA4P6K7}

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	2026-05-28T02:04:59.482707Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a3bdf0de1cff996e2f994a12071fe57cb6d3396ec788929b2987b19d6b328a3

Aliases

arxiv: 2605.28672 · arxiv_version: 2605.28672v1 · doi: 10.48550/arxiv.2605.28672 · pith_short_12: LI556DPBZ74Z · pith_short_16: LI556DPBZ74ZNYXZ · pith_short_8: LI556DPB

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/LI556DPBZ74ZNYXZSSQSA4P6K7 \
  | 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: 5a3bdf0de1cff996e2f994a12071fe57cb6d3396ec788929b2987b19d6b328a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ccdc90e1c64da7741526cd34eca0b800a318960be96f91657ed42884e9684b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2026-05-27T16:06:01Z",
    "title_canon_sha256": "4c7c62a5d33689a3e24aa128fdce0deed2cb29f168d49f01fa7354ea0d081ebf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28672",
    "kind": "arxiv",
    "version": 1
  }
}