Pith Number

pith:RT5GBE32

pith:2019:RT5GBE32RGXBW7GRHL7CFJ3IMH

not attested not anchored not stored refs pending

Topology optimization of freeform large-area metasurfaces

Rapha\"el Pestourie, Steven G. Johnson, Victor Liu, Zin Lin

arxiv:1902.03179 v1 · 2019-02-08 · 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{RT5GBE32RGXBW7GRHL7CFJ3IMH}

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	2026-05-17T23:42:23.938371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8cfa60937a89ae1b7cd13afe22a76861f9b51e6e206e5396b3bc15a7124470b5

Aliases

arxiv: 1902.03179 · arxiv_version: 1902.03179v1 · doi: 10.48550/arxiv.1902.03179 · pith_short_12: RT5GBE32RGXB · pith_short_16: RT5GBE32RGXBW7GR · pith_short_8: RT5GBE32

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/RT5GBE32RGXBW7GRHL7CFJ3IMH \
  | 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: 8cfa60937a89ae1b7cd13afe22a76861f9b51e6e206e5396b3bc15a7124470b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b981b1f5e39bfe0f2e7bcfdc12ffc1e2c3f4fdfd6a0a8d09ab10eb2c08507e8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-02-08T16:37:56Z",
    "title_canon_sha256": "d9032ade423b347716464870c99fe99498bbd5ff6364b056e129945307b2bf76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.03179",
    "kind": "arxiv",
    "version": 1
  }
}