Pith Number

pith:ZJJQJR7Q

pith:2004:ZJJQJR7QA2MC5J5WV3DRN7ARRZ

not attested not anchored not stored refs pending

Conditions for waveguide decoupling in square-lattice photonic crystals

Anu Huttunen, Paivi Torma, Timo Koponen

arxiv:physics/0404045 v1 · 2004-04-08 · 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{ZJJQJR7QA2MC5J5WV3DRN7ARRZ}

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	2026-05-18T04:35:55.470052Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca5304c7f006982ea7b6aec716fc118e48076f012b05f37cde00be6b0cfce522

Aliases

arxiv: physics/0404045 · arxiv_version: physics/0404045v1 · doi: 10.48550/arxiv.physics/0404045 · pith_short_12: ZJJQJR7QA2MC · pith_short_16: ZJJQJR7QA2MC5J5W · pith_short_8: ZJJQJR7Q

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/ZJJQJR7QA2MC5J5WV3DRN7ARRZ \
  | 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: ca5304c7f006982ea7b6aec716fc118e48076f012b05f37cde00be6b0cfce522

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f1b32da84cda89d92bc38b883f4000cf706b5a84197b306a6ac0246794d8ed2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.optics",
    "submitted_at": "2004-04-08T09:52:51Z",
    "title_canon_sha256": "ffab8b102a7e57fae485d29eb11c5da283aebb7cd0078d759be4519d722bc240"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0404045",
    "kind": "arxiv",
    "version": 1
  }
}