Pith Number

pith:OZA7X5AH

pith:2014:OZA7X5AH3FCST7RU2UZSNTIE2Q

not attested not anchored not stored refs pending

La meridiana di Egnazio Danti nella Torre dei Venti in Vaticano: un'icona della riforma Gregoriana del calendario

Costantino Sigismondi

arxiv:1401.3577 v1 · 2014-01-14 · physics.hist-ph · 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{OZA7X5AH3FCST7RU2UZSNTIE2Q}

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	2026-05-18T03:02:08.354882Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7641fbf407d94529fe34d53326cd04d423b4e4678dbf881f0fcedf14ebdcc178

Aliases

arxiv: 1401.3577 · arxiv_version: 1401.3577v1 · doi: 10.48550/arxiv.1401.3577 · pith_short_12: OZA7X5AH3FCS · pith_short_16: OZA7X5AH3FCST7RU · pith_short_8: OZA7X5AH

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/OZA7X5AH3FCST7RU2UZSNTIE2Q \
  | 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: 7641fbf407d94529fe34d53326cd04d423b4e4678dbf881f0fcedf14ebdcc178

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1d09d87c2900dda74472f9ede572cf2a8d9eeb276336071963d90899e6e2038",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2014-01-14T14:39:51Z",
    "title_canon_sha256": "8ad06182d1b4b601e3dd5aaa8fc06df2545d7518b6789df54bb28138259a0201"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.3577",
    "kind": "arxiv",
    "version": 1
  }
}