Pith Number

pith:NF5QZO4P

pith:2026:NF5QZO4PYQZ4BVSDWQ2I6IAY3Q

not attested not anchored not stored refs pending

Constant sensitivity birefringence metrology using vector vortex beams

Carmelo Rosales-Guzm\'an, Daniel F. Urrego, Daniel Salamanca-Rold\'an, Gabriela Flores-Cova, Juan P. Torres

arxiv:2606.18391 v1 · 2026-06-16 · 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{NF5QZO4PYQZ4BVSDWQ2I6IAY3Q}

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	2026-06-19T16:11:00.107051Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

697b0cbb8fc433c0d643b4348f2018dc1b87489be05e4dc9146ff6ebec762068

Aliases

arxiv: 2606.18391 · arxiv_version: 2606.18391v1 · doi: 10.48550/arxiv.2606.18391 · pith_short_12: NF5QZO4PYQZ4 · pith_short_16: NF5QZO4PYQZ4BVSD · pith_short_8: NF5QZO4P

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/NF5QZO4PYQZ4BVSDWQ2I6IAY3Q \
  | 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: 697b0cbb8fc433c0d643b4348f2018dc1b87489be05e4dc9146ff6ebec762068

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7acaf841d33b1a0bdb1f769fc457b30e387ef30f62f7df05ad8a8b16d8db0dc",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2026-06-16T18:35:16Z",
    "title_canon_sha256": "f3d059d95fca21b937338afc9d19a1faa26765a6c4e1a6eda3867e371290af09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.18391",
    "kind": "arxiv",
    "version": 1
  }
}