Pith Number

pith:43SG62DT

pith:2013:43SG62DTZE3QBJH7N4CUQUKPRQ

not attested not anchored not stored refs pending

The Heliometer of Rio de Janeiro in Operation - 2010 to 2013

Alexandre Humberto Andrei, Costantino Sigismondi, Eugenio Reis-Neto, Jucira Lousada Penna, Sergio Calderari Boscardin

arxiv:1306.3204 v1 · 2013-06-13 · 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{43SG62DTZE3QBJH7N4CUQUKPRQ}

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	2026-05-18T03:20:59.328706Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6e46f6873c93700a4ff6f0548514f8c2268067c2f048fd575d8c7f2de0044df

Aliases

arxiv: 1306.3204 · arxiv_version: 1306.3204v1 · doi: 10.48550/arxiv.1306.3204 · pith_short_12: 43SG62DTZE3Q · pith_short_16: 43SG62DTZE3QBJH7 · pith_short_8: 43SG62DT

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/43SG62DTZE3QBJH7N4CUQUKPRQ \
  | 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: e6e46f6873c93700a4ff6f0548514f8c2268067c2f048fd575d8c7f2de0044df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b0078b3342f0c2148b4d3a20608eec4508caf6cc7dc1a93707f23bcbe9007f4",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-06-13T19:24:07Z",
    "title_canon_sha256": "1a1b5edf2903af5b23032ae4373126c516197e0ac4f1eb787fc794dfac495c95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.3204",
    "kind": "arxiv",
    "version": 1
  }
}