Pith Number

pith:DRKOEM3Q

pith:2012:DRKOEM3QPDM2T4F2WG3LF5EWYP

not attested not anchored not stored refs pending

Coherent perfect absorption mediated anomalous reflection and refraction

Achanta Venu Gopal, Olivier J. F. Martin, Rahul Deshmukh, S. Dutta Gupta, Shourya Dutta-Gupta

arxiv:1207.5324 v1 · 2012-07-23 · 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{DRKOEM3QPDM2T4F2WG3LF5EWYP}

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	2026-05-18T01:56:09.225850Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c54e2337078d9a9f0bab1b6b2f496c3c3653b43624e3c86b28f6c6ccc55ed1b

Aliases

arxiv: 1207.5324 · arxiv_version: 1207.5324v1 · doi: 10.48550/arxiv.1207.5324 · pith_short_12: DRKOEM3QPDM2 · pith_short_16: DRKOEM3QPDM2T4F2 · pith_short_8: DRKOEM3Q

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/DRKOEM3QPDM2T4F2WG3LF5EWYP \
  | 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: 1c54e2337078d9a9f0bab1b6b2f496c3c3653b43624e3c86b28f6c6ccc55ed1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0455abd63cf65747285239d82061af6090f127801f16912116aa876c32308743",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2012-07-23T08:56:15Z",
    "title_canon_sha256": "a131a22bb5644b723854550581561e991e95a43d47196e6a6130297155c02213"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.5324",
    "kind": "arxiv",
    "version": 1
  }
}