Pith Number

pith:YIEEBS2B

pith:2021:YIEEBS2BJXT3KADDDHPCAWQGTC

not attested not anchored not stored refs pending

Isotropic Topological Second-Order Spatial Differentiator Operating in Transmission Mode

Cheng Guo, Haiwen Wang, Olivia Y. Long, Shanhui Fan

arxiv:2105.05349 v1 · 2021-05-11 · physics.optics · physics.app-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YIEEBS2BJXT3KADDDHPCAWQGTC}

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	2026-07-05T02:59:21.041945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c20840cb414de7b5006319de205a0698a34e0316a213ab822b6473e54c825793

Aliases

arxiv: 2105.05349 · arxiv_version: 2105.05349v1 · doi: 10.48550/arxiv.2105.05349 · pith_short_12: YIEEBS2BJXT3 · pith_short_16: YIEEBS2BJXT3KADD · pith_short_8: YIEEBS2B

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/YIEEBS2BJXT3KADDDHPCAWQGTC \
  | 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: c20840cb414de7b5006319de205a0698a34e0316a213ab822b6473e54c825793

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0f19b61df093b0a55ea7c5dfdf51e8290d7f91b4928396ca3d64660a5259042",
    "cross_cats_sorted": [
      "physics.app-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2021-05-11T21:49:49Z",
    "title_canon_sha256": "60cbf0efe79cb89b1f9f9cab8de29bace60e57d28c86d308f9722e4885450c00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.05349",
    "kind": "arxiv",
    "version": 1
  }
}