Pith Number

pith:BGGZK6VD

pith:2016:BGGZK6VDCH5EJR243AIYQ2YTRI

not attested not anchored not stored refs pending

The new world atlas of artificial night sky brightness

Boris A. Portnov, Christopher C. M. Kyba, Christopher D. Elvidge, Dan Duriscoe, Fabio Falchi, Kimberly Baugh, Nataliya A. Rybnikova, Pierantonio Cinzano, Riccardo Furgoni

arxiv:1609.01041 v1 · 2016-09-05 · astro-ph.IM · 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{BGGZK6VDCH5EJR243AIYQ2YTRI}

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	2026-05-18T01:06:19.220096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

098d957aa311fa44c75cd811886b138a1ed1330005872fd9acb26bd03d1aac0e

Aliases

arxiv: 1609.01041 · arxiv_version: 1609.01041v1 · doi: 10.48550/arxiv.1609.01041 · pith_short_12: BGGZK6VDCH5E · pith_short_16: BGGZK6VDCH5EJR24 · pith_short_8: BGGZK6VD

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/BGGZK6VDCH5EJR243AIYQ2YTRI \
  | 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: 098d957aa311fa44c75cd811886b138a1ed1330005872fd9acb26bd03d1aac0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ae53f3294b2fe1b5892e781a71fda0696594a7f04567d0e817623996fe1d2fb",
    "cross_cats_sorted": [
      "physics.ao-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2016-09-05T07:29:46Z",
    "title_canon_sha256": "218cef7307e5838b81b06d1657d4934278879f5be4c155958e29b773949c2b91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.01041",
    "kind": "arxiv",
    "version": 1
  }
}