Pith Number

pith:2SHY76L4

pith:2025:2SHY76L4HUQ5ZJZ2F54SIJG2JN

not attested not anchored not stored refs pending

Non-dispersive graded impedance acoustic lenses

Sebastiano Cominelli

arxiv:2501.00821 v2 · 2025-01-01 · physics.optics · physics.app-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2SHY76L4HUQ5ZJZ2F54SIJG2JN}

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.

Cited by

1 paper in Pith

Reduced-weight near-cloaks for underwater invisibility

Receipt and verification

First computed	2026-07-05T11:22:35.306310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d48f8ff97c3d21dca73a2f792424da4b7451dd90563d011f8ef95a4c56986eb8

Aliases

arxiv: 2501.00821 · arxiv_version: 2501.00821v2 · doi: 10.48550/arxiv.2501.00821 · pith_short_12: 2SHY76L4HUQ5 · pith_short_16: 2SHY76L4HUQ5ZJZ2 · pith_short_8: 2SHY76L4

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/2SHY76L4HUQ5ZJZ2F54SIJG2JN \
  | 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: d48f8ff97c3d21dca73a2f792424da4b7451dd90563d011f8ef95a4c56986eb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ff378afa3242c3f708dd848815d10b061abbe51e6d1cfcc732344a157f6a0e7",
    "cross_cats_sorted": [
      "physics.app-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-01-01T12:51:14Z",
    "title_canon_sha256": "daf9074a92ca7435fa5640df8cb0b812b79aaed6811451c871a1fb816f77a5f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.00821",
    "kind": "arxiv",
    "version": 2
  }
}