Pith Number

pith:3P4OPWRR

pith:2021:3P4OPWRRR5YR7QADDIRY55JNG5

not attested not anchored not stored refs pending

Natural Night Sky Brightness during Solar Minimum

M. Mallorquin, M. R. Alarcon, M. Serra-Ricart, S. Lemes-Perera

arxiv:2105.01066 v2 · 2021-05-03 · 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{3P4OPWRRR5YR7QADDIRY55JNG5}

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	2026-07-05T02:52:02.526274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbf8e7da318f711fc0031a238ef52d377a66dbf8d1f431c2f60b301b87d4f2e7

Aliases

arxiv: 2105.01066 · arxiv_version: 2105.01066v2 · doi: 10.48550/arxiv.2105.01066 · pith_short_12: 3P4OPWRRR5YR · pith_short_16: 3P4OPWRRR5YR7QAD · pith_short_8: 3P4OPWRR

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/3P4OPWRRR5YR7QADDIRY55JNG5 \
  | 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: dbf8e7da318f711fc0031a238ef52d377a66dbf8d1f431c2f60b301b87d4f2e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ac03fdc4c03bdeb329b37ed39ae1b9f59877a3ed14a1d2e910edbb4ffdeb39d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-05-03T18:00:00Z",
    "title_canon_sha256": "2ec33084172f42af043ed3c9f30f8073a17fdd2d6997a5223b80e77e7f33c380"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.01066",
    "kind": "arxiv",
    "version": 2
  }
}