Pith Number

pith:X2MXU2VR

pith:2025:X2MXU2VR2SSVYRLYKCU2KCFU7Q

not attested not anchored not stored refs pending

Optical Skyrmions of Vortex Darkness

Deepak K. Sharma, Miguel A. Porras, Nilo Mata-Cervera, Ramon Paniagua-Dominguez, Yijie Shen

arxiv:2501.16687 v1 · 2025-01-28 · 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{X2MXU2VR2SSVYRLYKCU2KCFU7Q}

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	2026-07-05T10:06:17.170300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be997a6ab1d4a55c457850a9a508b4fc0c01339e0492eed63a882649268e884d

Aliases

arxiv: 2501.16687 · arxiv_version: 2501.16687v1 · doi: 10.48550/arxiv.2501.16687 · pith_short_12: X2MXU2VR2SSV · pith_short_16: X2MXU2VR2SSVYRLY · pith_short_8: X2MXU2VR

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/X2MXU2VR2SSVYRLYKCU2KCFU7Q \
  | 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: be997a6ab1d4a55c457850a9a508b4fc0c01339e0492eed63a882649268e884d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e18bdeeb09796ccca1430b2a614b0d1beb193e19897d5a784896aac3de94d304",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-01-28T03:49:56Z",
    "title_canon_sha256": "1e47e552acb972f521870e3ca7863747c465281d60910e7b20272edcf1a9bc7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.16687",
    "kind": "arxiv",
    "version": 1
  }
}