Pith Number

pith:5GBPLNQA

pith:2025:5GBPLNQALZKZ5BEBLBKBKUPB5I

not attested not anchored not stored refs pending

Photometry with the new 1.5-meter telescope of the Rozhen Observatory

D. Marchev, E. Ovcharov, E. Semkov, I. E. Dimitrova, J. Marti, M. Minev, M. Moyseev, N. Petrov, R. K. Zamanov

arxiv:2508.18752 v1 · 2025-08-26 · astro-ph.IM · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5GBPLNQALZKZ5BEBLBKBKUPB5I}

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	2026-07-05T11:59:30.214355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e982f5b6005e559e848158541551e1ea0f91141795654858a2bc6231a624c907

Aliases

arxiv: 2508.18752 · arxiv_version: 2508.18752v1 · doi: 10.48550/arxiv.2508.18752 · pith_short_12: 5GBPLNQALZKZ · pith_short_16: 5GBPLNQALZKZ5BEB · pith_short_8: 5GBPLNQA

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/5GBPLNQALZKZ5BEBLBKBKUPB5I \
  | 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: e982f5b6005e559e848158541551e1ea0f91141795654858a2bc6231a624c907

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8968afd72a1a56aff971b77d54df5b9f8db3b9ac3593a60cad3b02f90ad25934",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2025-08-26T07:28:43Z",
    "title_canon_sha256": "59a8962749258bd73654ccf47b46bc97ed21d65e4b2f7e478f82f6dc60d04cab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.18752",
    "kind": "arxiv",
    "version": 1
  }
}