Pith Number

pith:RWF4SUNQ

pith:2014:RWF4SUNQCHFA5QL772UKVMLPMM

not attested not anchored not stored refs pending

Big Crunch-based omnidirectional light concentrators

Igor I. Smolyaninov, Yu-Ju Hung

arxiv:1405.4249 v1 · 2014-05-16 · physics.optics · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RWF4SUNQCHFA5QL772UKVMLPMM}

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	2026-05-18T01:43:11.580235Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d8bc951b011ca0ec17ffea8aab16f633b73a6abd9ddb8aaa6611b7bcf324a02

Aliases

arxiv: 1405.4249 · arxiv_version: 1405.4249v1 · doi: 10.48550/arxiv.1405.4249 · pith_short_12: RWF4SUNQCHFA · pith_short_16: RWF4SUNQCHFA5QL7 · pith_short_8: RWF4SUNQ

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/RWF4SUNQCHFA5QL772UKVMLPMM \
  | 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: 8d8bc951b011ca0ec17ffea8aab16f633b73a6abd9ddb8aaa6611b7bcf324a02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e1b093f99f37306ad67baa74087dd33178de4cba469328bd7055e97a2f9af30",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2014-05-16T17:24:26Z",
    "title_canon_sha256": "a8e19541c64dd77971872efc4095661ffbe25c5321520076522c7879f575b42b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.4249",
    "kind": "arxiv",
    "version": 1
  }
}