Pith Number

pith:53ZCTB26

pith:2014:53ZCTB26AILJQUWBUH4Q36APMQ

not attested not anchored not stored refs pending

South African night sky brightness during high aerosol epochs

Francois van Wyk, Fred Marang, Hartmut Winkler

arxiv:1409.2996 v1 · 2014-09-10 · astro-ph.IM · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{53ZCTB26AILJQUWBUH4Q36APMQ}

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	2026-05-18T02:43:08.547290Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eef229875e02169852c1a1f90df80f6425e5f9aab68d3ef177dd3338206976fa

Aliases

arxiv: 1409.2996 · arxiv_version: 1409.2996v1 · doi: 10.48550/arxiv.1409.2996 · pith_short_12: 53ZCTB26AILJ · pith_short_16: 53ZCTB26AILJQUWB · pith_short_8: 53ZCTB26

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/53ZCTB26AILJQUWBUH4Q36APMQ \
  | 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: eef229875e02169852c1a1f90df80f6425e5f9aab68d3ef177dd3338206976fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "758b7fcf38500ee3d02f5b37058f8b6453579d49d98833713e77baea5ae55140",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2014-09-10T09:03:09Z",
    "title_canon_sha256": "6c4d89b27d2f878d0e0be397e4b7cebf5530824b8ddc9e2a8dccbb30f3a12778"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.2996",
    "kind": "arxiv",
    "version": 1
  }
}