Pith Number

pith:523NITLI

pith:2013:523NITLITAZTIIHKZNA7DW6WKJ

not attested not anchored not stored refs pending

The night sky brightness at Potsdam-Babelsberg

Axel Schwope, Johannes Puschnig, Robert Schwarz, Thomas Posch

arxiv:1307.2038 v2 · 2013-07-08 · 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{523NITLITAZTIIHKZNA7DW6WKJ}

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	2026-05-18T00:42:02.842260Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eeb6d44d6898333420eacb41f1dbd652413a2d0ba69c128dfd0ef63751d875e2

Aliases

arxiv: 1307.2038 · arxiv_version: 1307.2038v2 · doi: 10.48550/arxiv.1307.2038 · pith_short_12: 523NITLITAZT · pith_short_16: 523NITLITAZTIIHK · pith_short_8: 523NITLI

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/523NITLITAZTIIHKZNA7DW6WKJ \
  | 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: eeb6d44d6898333420eacb41f1dbd652413a2d0ba69c128dfd0ef63751d875e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "787c9c37d957d75374761beab278d5db555ab607eee68473eaf0a63365e94bc5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-07-08T11:16:23Z",
    "title_canon_sha256": "f4c414f1a8309e3adf67a2694674dbad7ec97e4b6b6d1c741dc4c9e4a4eef074"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2038",
    "kind": "arxiv",
    "version": 2
  }
}