Pith Number

pith:HLKLATPY

pith:2013:HLKLATPYLKHS3MOW7VH3RLCZYZ

not attested not anchored not stored refs pending

One dimensional surface profilometry by analyzing the Fresnel diffraction pattern from a step

Ahmad Darudi, Soghra Osanloo

arxiv:1311.4350 v1 · 2013-11-18 · 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{HLKLATPYLKHS3MOW7VH3RLCZYZ}

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	2026-05-18T03:06:52.941179Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ad4b04df85a8f2db1d6fd4fb8ac59c6771b66a88d7147ec52b6a85f9f097123

Aliases

arxiv: 1311.4350 · arxiv_version: 1311.4350v1 · doi: 10.48550/arxiv.1311.4350 · pith_short_12: HLKLATPYLKHS · pith_short_16: HLKLATPYLKHS3MOW · pith_short_8: HLKLATPY

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/HLKLATPYLKHS3MOW7VH3RLCZYZ \
  | 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: 3ad4b04df85a8f2db1d6fd4fb8ac59c6771b66a88d7147ec52b6a85f9f097123

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df5e06ae69d5d5fb7ee3b1f7dbfbcad09d0974a0d11226370c67a89a17af5c5a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2013-11-18T11:59:25Z",
    "title_canon_sha256": "a19de7c8e6e6bb0fa491295ec9c98918ea909768cf06c6f9d1e09019f6db9a2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.4350",
    "kind": "arxiv",
    "version": 1
  }
}