Pith Number

pith:D27KPV5Y

pith:2012:D27KPV5YO4OG6UIKXBSXEE3NRM

not attested not anchored not stored refs pending

La Terra come osservatorio astronomico: la correzione al raggio solare medio nell'eclissi anulare del 22 settembre 2006

Costantino Sigismondi

arxiv:1211.2727 v1 · 2012-11-12 · 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{D27KPV5YO4OG6UIKXBSXEE3NRM}

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	2026-05-18T03:41:02.023794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ebea7d7b8771c6f510ab86572136d8b29462a12d48e2b4f73d51e92d6a5d120

Aliases

arxiv: 1211.2727 · arxiv_version: 1211.2727v1 · doi: 10.48550/arxiv.1211.2727 · pith_short_12: D27KPV5YO4OG · pith_short_16: D27KPV5YO4OG6UIK · pith_short_8: D27KPV5Y

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/D27KPV5YO4OG6UIKXBSXEE3NRM \
  | 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: 1ebea7d7b8771c6f510ab86572136d8b29462a12d48e2b4f73d51e92d6a5d120

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "079dadc45e8c7dcbe10cebbdfdf4fd5357cedd3b94b43684cdd69db340036945",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-11-12T18:42:45Z",
    "title_canon_sha256": "9eb24ead33dc67fc2ba91d5b0381326a7ccdfda0bbe33c1dfb91e977ca541ae3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.2727",
    "kind": "arxiv",
    "version": 1
  }
}