Pith Number

pith:NXA6H54P

pith:2018:NXA6H54PSH47RFA5MRNRSIJL55

not attested not anchored not stored refs pending

Planar Cassegrain-type Schwarzschild Objective with Optical Metasurfaces

Guixin Li, Jing Zhou, Junhong Deng, King Fai Li, Mingke Jin, Wei Liu, Xing Cheng, Xuan Liu, Yutao Tang

arxiv:1807.01143 v1 · 2018-07-03 · 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{NXA6H54PSH47RFA5MRNRSIJL55}

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	2026-05-18T00:11:45.169271Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6dc1e3f78f91f9f8941d645b19212bef549798299620dce88e7d3c44d3449b69

Aliases

arxiv: 1807.01143 · arxiv_version: 1807.01143v1 · doi: 10.48550/arxiv.1807.01143 · pith_short_12: NXA6H54PSH47 · pith_short_16: NXA6H54PSH47RFA5 · pith_short_8: NXA6H54P

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/NXA6H54PSH47RFA5MRNRSIJL55 \
  | 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: 6dc1e3f78f91f9f8941d645b19212bef549798299620dce88e7d3c44d3449b69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db3ca649180720f562d15d61ec8b66380ad2239872c428b8ec474dddc97a5ebb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-07-03T13:15:36Z",
    "title_canon_sha256": "a66b1a4cce197d8b823589f7a7684de2acf892667bb6dffc6d21f021870808af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01143",
    "kind": "arxiv",
    "version": 1
  }
}