Pith Number

pith:PZ24WPEP

pith:2012:PZ24WPEPUBOQFIWHYGUT2QPWWK

not attested not anchored not stored refs pending

Gerberto e l'Astronomia

Costantino Sigismondi

arxiv:1211.2777 v1 · 2012-11-12 · 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{PZ24WPEPUBOQFIWHYGUT2QPWWK}

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	2026-05-18T03:41:01.812746Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e75cb3c8fa05d02a2c7c1a93d41f6b28c4564fa09ec45dd48f9b0eeb8c80a8a

Aliases

arxiv: 1211.2777 · arxiv_version: 1211.2777v1 · doi: 10.48550/arxiv.1211.2777 · pith_short_12: PZ24WPEPUBOQ · pith_short_16: PZ24WPEPUBOQFIWH · pith_short_8: PZ24WPEP

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/PZ24WPEPUBOQFIWHYGUT2QPWWK \
  | 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: 7e75cb3c8fa05d02a2c7c1a93d41f6b28c4564fa09ec45dd48f9b0eeb8c80a8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33bce4b3113add0c957c92b04d32f3a8370906ff19ba82a402362fd5d26d229e",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2012-11-12T20:41:22Z",
    "title_canon_sha256": "904b1aa342a36e1bc77a6120e422ae7a2fbdef7f2756cdea850f61c5b389ef70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.2777",
    "kind": "arxiv",
    "version": 1
  }
}