Pith Number

pith:UJB2ISLW

pith:2019:UJB2ISLWWSQJ3RMMBSN32Q4FXW

not attested not anchored not stored refs pending

Broadband lightweight flat lenses for longwave-infrared imaging

Apratim Majumder, Berardi Sensale-Rodriguez, Fernando Guevara Vasquez, Monjurul Meem, Rajesh Menon, Sourangsu Banerji

arxiv:1904.09011 v2 · 2019-04-18 · 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{UJB2ISLWWSQJ3RMMBSN32Q4FXW}

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	2026-07-05T04:29:48.983934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a243a44976b4a09dc58c0c9bbd4385bdb65e2a0306a2fb35a2c9902d6b4e2ec5

Aliases

arxiv: 1904.09011 · arxiv_version: 1904.09011v2 · doi: 10.48550/arxiv.1904.09011 · pith_short_12: UJB2ISLWWSQJ · pith_short_16: UJB2ISLWWSQJ3RMM · pith_short_8: UJB2ISLW

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/UJB2ISLWWSQJ3RMMBSN32Q4FXW \
  | 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: a243a44976b4a09dc58c0c9bbd4385bdb65e2a0306a2fb35a2c9902d6b4e2ec5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f53d670f72c724d07b5249e78a9dec27902be06363f62330fd41770a55c6e1c8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-04-18T20:58:52Z",
    "title_canon_sha256": "e40e49cbd24fb098c6a13644bd9b64f5574c2e9af335c2c631efda8dbbc86227"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09011",
    "kind": "arxiv",
    "version": 2
  }
}