Pith Number

pith:OPFFI7HE

pith:2013:OPFFI7HENVC6XNTJCHGOVUJMR3

not attested not anchored not stored refs pending

Positions of Pluto extracted from digitized Pulkovo photographic plates taken in 1930 - 1960

(2) Royal Observatory of Belgium, A.A. Berezhnoy (1), Belgium), E.V. Khrutskaya (1), G. de Decker (2) ((1) Pulkovo Observatory, J.-P. De Cuyper (2), Pulkovskoye chaussee, Ringlaan, Russia, Saint Petersburg, S.I. Kalinin (1), Ukkel

arxiv:1310.7502 v1 · 2013-10-28 · astro-ph.EP · 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{OPFFI7HENVC6XNTJCHGOVUJMR3}

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	2026-05-18T03:08:38.986731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73ca547ce46d45ebb66911ccead12c8efd3fb140de745401316876796dd9cb9d

Aliases

arxiv: 1310.7502 · arxiv_version: 1310.7502v1 · doi: 10.48550/arxiv.1310.7502 · pith_short_12: OPFFI7HENVC6 · pith_short_16: OPFFI7HENVC6XNTJ · pith_short_8: OPFFI7HE

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/OPFFI7HENVC6XNTJCHGOVUJMR3 \
  | 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: 73ca547ce46d45ebb66911ccead12c8efd3fb140de745401316876796dd9cb9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ec06f64d575e15f3d44c3b83a69590efa3e8bcafa3f11f7fdd73742d36801d3",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-10-28T17:27:10Z",
    "title_canon_sha256": "16f83c4717afa279e28d4b0102dc4d60b33268c80e2b9ed5cda46faf105876f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.7502",
    "kind": "arxiv",
    "version": 1
  }
}