Pith Number

pith:IISP6MC4

pith:2016:IISP6MC44ZNSLSKFFCEDFH76VP

not attested not anchored not stored refs pending

Night sky brightness at San Pedro Martir Observatory

A. Cordova (1), E. Colorado (1), F. Avila (1) ((1) Instituto de Astronomia - Universidad Nacional Autonoma de Mexico), I. Plauchu-Frayn (1), J. Herrera (1), M. G. Richer (1), U. Cesena (1)

arxiv:1609.00423 v1 · 2016-09-01 · 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{IISP6MC44ZNSLSKFFCEDFH76VP}

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	2026-05-18T00:51:16.513004Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4224ff305ce65b25c9452888329ffeabce03078d734a350c57722dbf706309ef

Aliases

arxiv: 1609.00423 · arxiv_version: 1609.00423v1 · doi: 10.48550/arxiv.1609.00423 · pith_short_12: IISP6MC44ZNS · pith_short_16: IISP6MC44ZNSLSKF · pith_short_8: IISP6MC4

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/IISP6MC44ZNSLSKFFCEDFH76VP \
  | 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: 4224ff305ce65b25c9452888329ffeabce03078d734a350c57722dbf706309ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45ecccc4fde4b55dca16122180f9cbc35181eaf84fe58ebb5663f0091dd51226",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2016-09-01T23:14:08Z",
    "title_canon_sha256": "5a46106d777a26994d463d6cb00b01e46bc10753f5366f56b54a7f83ca76d76a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.00423",
    "kind": "arxiv",
    "version": 1
  }
}