Pith Number

pith:7ZWIZBNA

pith:2012:7ZWIZBNAZZ3LTAZ7MXV7QPPSQM

not attested not anchored not stored refs pending

Carpet cloaking and Laplace transformation

J. C. Nacher, T. Ochiai

arxiv:1202.4447 v1 · 2012-02-20 · physics.optics

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7ZWIZBNAZZ3LTAZ7MXV7QPPSQM}

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	2026-05-18T04:01:51.533381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe6c8c85a0ce76b9833f65ebf83df2832cc0548b44e8af5eb7368455f862eb23

Aliases

arxiv: 1202.4447 · arxiv_version: 1202.4447v1 · doi: 10.48550/arxiv.1202.4447 · pith_short_12: 7ZWIZBNAZZ3L · pith_short_16: 7ZWIZBNAZZ3LTAZ7 · pith_short_8: 7ZWIZBNA

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/7ZWIZBNAZZ3LTAZ7MXV7QPPSQM \
  | 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: fe6c8c85a0ce76b9833f65ebf83df2832cc0548b44e8af5eb7368455f862eb23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54b8ff0c557d120b6fd26866641f303e34c9ccc6c616fd04b6ddfa2f968af8b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2012-02-20T20:47:46Z",
    "title_canon_sha256": "a6fc19e261d9536a0ccf9cad63f85328832b13fa9933273884af3b5d0b6e911f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.4447",
    "kind": "arxiv",
    "version": 1
  }
}