Pith Number

pith:PWYNZIPX

pith:2013:PWYNZIPXEBVEARGWAFDW6RNOEZ

not attested not anchored not stored refs pending

Cloaking and Magnifying Using Radial Anisotropy

Ari Sihvola, Henrik Kettunen, Henrik Wall\'en

arxiv:1305.2907 v3 · 2013-05-13 · physics.class-ph · 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{PWYNZIPXEBVEARGWAFDW6RNOEZ}

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	2026-05-18T03:16:49.083866Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7db0dca1f7206a4044d601476f45ae264794818e0e5cd402bb1707f459673e4d

Aliases

arxiv: 1305.2907 · arxiv_version: 1305.2907v3 · doi: 10.48550/arxiv.1305.2907 · pith_short_12: PWYNZIPXEBVE · pith_short_16: PWYNZIPXEBVEARGW · pith_short_8: PWYNZIPX

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/PWYNZIPXEBVEARGWAFDW6RNOEZ \
  | 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: 7db0dca1f7206a4044d601476f45ae264794818e0e5cd402bb1707f459673e4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f34916041c27dd4d5fb3c069187a7cfd5ed4a493c54d5345d9be4027956ede4",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2013-05-13T07:09:44Z",
    "title_canon_sha256": "0cd4d3f5f0fd7f1f635733cc204ef487145feed3def4829cec4bd39690decb72"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2907",
    "kind": "arxiv",
    "version": 3
  }
}