Pith Number

pith:VYFMJF7H

pith:2018:VYFMJF7H53MU4W7QZD7NBPM7OF

not attested not anchored not stored refs pending

Tracking the dynamics of skyglow with differential photometry using a digital camera with fisheye lens

Andreas Jechow, Christopher C. M. Kyba, Franz H\"olker, Ramon Canal-Domingo, Salvador J. Ribas, Zolt\'an Koll\'ath

arxiv:1808.10224 v1 · 2018-08-30 · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VYFMJF7H53MU4W7QZD7NBPM7OF}

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	2026-05-18T00:06:49.477692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae0ac497e7eed94e5bf0c8fed0bd9f71794827be5b796176e784dcadc68f0f45

Aliases

arxiv: 1808.10224 · arxiv_version: 1808.10224v1 · doi: 10.48550/arxiv.1808.10224 · pith_short_12: VYFMJF7H53MU · pith_short_16: VYFMJF7H53MU4W7Q · pith_short_8: VYFMJF7H

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/VYFMJF7H53MU4W7QZD7NBPM7OF \
  | 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: ae0ac497e7eed94e5bf0c8fed0bd9f71794827be5b796176e784dcadc68f0f45

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54d747510f2d7e6026cb4d14c43631a155702ed62749b8b8a8fd6720da5ccdc9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-08-30T11:21:49Z",
    "title_canon_sha256": "2067f77c5410fcc1016348eb5b8ee76a5ffad5e11bb2382c2fc83138e202de97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.10224",
    "kind": "arxiv",
    "version": 1
  }
}