Pith Number

pith:T3GUBIFS

pith:2019:T3GUBIFSTCEQ5Z33G5ORW5SN3G

not attested not anchored not stored refs pending

Beam quality measurement through off-axis optical vortex

Agnieszka Popio{\l}ek-Masajada, Jan Masajada, Mateusz Szatkowski

arxiv:1908.08879 v2 · 2019-08-23 · 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{T3GUBIFSTCEQ5Z33G5ORW5SN3G}

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	2026-07-05T00:07:24.536345Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ecd40a0b298890ee77b375d1b764dd997dd376b8874fb6e3a27a8fcf4274244

Aliases

arxiv: 1908.08879 · arxiv_version: 1908.08879v2 · doi: 10.48550/arxiv.1908.08879 · pith_short_12: T3GUBIFSTCEQ · pith_short_16: T3GUBIFSTCEQ5Z33 · pith_short_8: T3GUBIFS

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/T3GUBIFSTCEQ5Z33G5ORW5SN3G \
  | 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: 9ecd40a0b298890ee77b375d1b764dd997dd376b8874fb6e3a27a8fcf4274244

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85610156ed5f575309fa9beb8eedda5b170f8b27c3fd486df965c305a5127c1d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-08-23T15:47:07Z",
    "title_canon_sha256": "a2411f7cb8ee1c5bf2280e9b1da4ff49b162b29606c7d40d04a4735cd7218af4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08879",
    "kind": "arxiv",
    "version": 2
  }
}