Pith Number

pith:6TYFKA7D

pith:2010:6TYFKA7D5BMTNKDG56D6LGZSUE

not attested not anchored not stored refs pending

Transformation Optics with Photonic Band Gap Media

David R. Smith, Yaroslav A. Urzhumov

arxiv:1007.3227 v2 · 2010-07-19 · 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{6TYFKA7D5BMTNKDG56D6LGZSUE}

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	2026-05-18T04:35:14.669915Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f4f05503e3e85936a866ef87e59b32a106f52f0a07d42bc6fd88bd49e85bfa80

Aliases

arxiv: 1007.3227 · arxiv_version: 1007.3227v2 · doi: 10.48550/arxiv.1007.3227 · pith_short_12: 6TYFKA7D5BMT · pith_short_16: 6TYFKA7D5BMTNKDG · pith_short_8: 6TYFKA7D

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/6TYFKA7D5BMTNKDG56D6LGZSUE \
  | 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: f4f05503e3e85936a866ef87e59b32a106f52f0a07d42bc6fd88bd49e85bfa80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fc467c678f812551f25f25c7c1600181608bb362a915d661e03502c852057a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2010-07-19T18:07:27Z",
    "title_canon_sha256": "b3b54fbb652bc258b1c938b8aee0e046e247ae6fe60aec1aa7cd33196d12a4f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.3227",
    "kind": "arxiv",
    "version": 2
  }
}