Pith Number

pith:Z4SFU3C3

pith:2015:Z4SFU3C3EFWSEDCBQWYLKII3WH

not attested not anchored not stored refs pending

Experimental demonstration of Luneburg waveguides

Christopher Jensen, David Lahneman, Igor I. Smolyaninov, Kathryn Zander, Thomas Gresock, Todd Adams, Vera N. Smolyaninova

arxiv:1504.02815 v1 · 2015-04-10 · 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{Z4SFU3C3EFWSEDCBQWYLKII3WH}

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	2026-05-18T02:18:23.217918Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf245a6c5b216d220c4185b0b5211bb1fddf8785534db6105ec7e0cbc8d28ffc

Aliases

arxiv: 1504.02815 · arxiv_version: 1504.02815v1 · doi: 10.48550/arxiv.1504.02815 · pith_short_12: Z4SFU3C3EFWS · pith_short_16: Z4SFU3C3EFWSEDCB · pith_short_8: Z4SFU3C3

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/Z4SFU3C3EFWSEDCBQWYLKII3WH \
  | 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: cf245a6c5b216d220c4185b0b5211bb1fddf8785534db6105ec7e0cbc8d28ffc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7cdf977209838af353cfe3c6c9e0f12cfd058fecb46416c4b5124cc7977154e5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2015-04-10T23:07:25Z",
    "title_canon_sha256": "a2d6ef4453928f823fc91db6fd1fa83cd9c96597e8c5da42c9109b59848b13d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02815",
    "kind": "arxiv",
    "version": 1
  }
}