Pith Number

pith:64LELBDW

pith:2013:64LELBDWVEYAAGHA67UIJUJMCO

not attested not anchored not stored refs pending

Solar astrometry with Rio Astrolabe and Heliometer

Alexandre Humberto Andrei, Costantino Sigismondi, Eugenio Reis-Neto, Jucira Lousada Penna, Sergio Calderari Boscardin, Victor Amorim D'Avila

arxiv:1311.3472 v2 · 2013-11-14 · 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{64LELBDWVEYAAGHA67UIJUJMCO}

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	2026-05-18T03:06:54.065808Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f716458476a9300018e0f7e884d12c13adae856d07b745dd37ee6c5bb01b0bca

Aliases

arxiv: 1311.3472 · arxiv_version: 1311.3472v2 · doi: 10.48550/arxiv.1311.3472 · pith_short_12: 64LELBDWVEYA · pith_short_16: 64LELBDWVEYAAGHA · pith_short_8: 64LELBDW

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/64LELBDWVEYAAGHA67UIJUJMCO \
  | 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: f716458476a9300018e0f7e884d12c13adae856d07b745dd37ee6c5bb01b0bca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a51f66dd73a18e2a2255c7e934ebbef9473bb54d7e81da51919e92e0cd5cde7c",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-11-14T11:55:51Z",
    "title_canon_sha256": "4444f0c0db10246dd3eaaf5400eedee58e91d89141fd37a5cea88c019c48a2b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.3472",
    "kind": "arxiv",
    "version": 2
  }
}