Pith Number

pith:U7DSNONO

pith:2003:U7DSNONOVIRJWLCVGRZGRYEBNB

not attested not anchored not stored refs pending

UBVRI Night sky brightness during sunspot maximum at ESO-Paranal

Ferdinando Patat (ESO)

arxiv:astro-ph/0301115 v1 · 2003-01-07 · astro-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{U7DSNONOVIRJWLCVGRZGRYEBNB}

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	2026-05-18T04:21:42.257696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7c726b9aeaa229b2c55347268e08168503d51790a98e9b597653dc8e874749d

Aliases

arxiv: astro-ph/0301115 · arxiv_version: astro-ph/0301115v1 · doi: 10.48550/arxiv.astro-ph/0301115 · pith_short_12: U7DSNONOVIRJ · pith_short_16: U7DSNONOVIRJWLCV · pith_short_8: U7DSNONO

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/U7DSNONOVIRJWLCVGRZGRYEBNB \
  | 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: a7c726b9aeaa229b2c55347268e08168503d51790a98e9b597653dc8e874749d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24c56f0d84fc6934947298651f1c8834ec88e1c35aca66abf9ee429af832faed",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-01-07T14:06:26Z",
    "title_canon_sha256": "37da0418b9a655d2dc05653049bc2ca8c29c5ddfa5da87de20c107ae15793cfe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0301115",
    "kind": "arxiv",
    "version": 1
  }
}