Pith Number

pith:LADKZEHC

pith:2013:LADKZEHC7O7M7EL3DBCFP256CY

not attested not anchored not stored refs pending

Analysis of a series of measurements of solar semidiameter variations during 2001 at the astrolabe of Rio de Janeiro

S\'ergio Calderari Boscardin

arxiv:1301.1920 v1 · 2013-01-09 · astro-ph.SR · 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{LADKZEHC7O7M7EL3DBCFP256CY}

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	2026-05-18T03:36:55.680193Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5806ac90e2fbbecf917b184457ebbe161d2d75cfa9132458128fb179afffbfa7

Aliases

arxiv: 1301.1920 · arxiv_version: 1301.1920v1 · doi: 10.48550/arxiv.1301.1920 · pith_short_12: LADKZEHC7O7M · pith_short_16: LADKZEHC7O7M7EL3 · pith_short_8: LADKZEHC

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/LADKZEHC7O7M7EL3DBCFP256CY \
  | 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: 5806ac90e2fbbecf917b184457ebbe161d2d75cfa9132458128fb179afffbfa7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ec397ac43b0021a3ef38b2c5e5a4212aea78cf61a0d21f3a698fb51681a251d",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-01-09T16:53:06Z",
    "title_canon_sha256": "0fabdd17d28b39f1276755f96a898ccf32ab787121179e2936b45bce5918a3d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.1920",
    "kind": "arxiv",
    "version": 1
  }
}