Pith Number

pith:OE5KGRYX

pith:2007:OE5KGRYXBQYXSGEZ2JOIJ3TO5U

not attested not anchored not stored refs pending

Q-based design equations for resonant metamaterials and experimental validation

Bogdan-Ioan Popa, Steven A. Cummer, Thomas H. Hand

arxiv:physics/0703130 v1 · 2007-03-13 · 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{OE5KGRYXBQYXSGEZ2JOIJ3TO5U}

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	2026-05-18T01:38:04.633760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

713aa347170c31791899d25c84ee6eed1b499762e518ab521c62101f9278f3a4

Aliases

arxiv: physics/0703130 · arxiv_version: physics/0703130v1 · doi: 10.48550/arxiv.physics/0703130 · pith_short_12: OE5KGRYXBQYX · pith_short_16: OE5KGRYXBQYXSGEZ · pith_short_8: OE5KGRYX

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/OE5KGRYXBQYXSGEZ2JOIJ3TO5U \
  | 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: 713aa347170c31791899d25c84ee6eed1b499762e518ab521c62101f9278f3a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f84882dcc772e746c0350296fc70f61ff8933141eaab8c1c4dcc185f1ec384b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.optics",
    "submitted_at": "2007-03-13T18:57:21Z",
    "title_canon_sha256": "4fed727ef073142014eb64933a821272ae8f37d952749d4a2680b59859c2a008"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0703130",
    "kind": "arxiv",
    "version": 1
  }
}