Pith Number

pith:3S554HLE

pith:2016:3S554HLE7YGYCDBM6F3T6TD43U

not attested not anchored not stored refs pending

A Technique to Measure Focal Length of a Lens with no Bulk Motion using Tunable Optics and Optical MEMS Technology

Arslan Anjum, Syed Azer Reza

arxiv:1601.04698 v1 · 2016-01-16 · physics.ins-det · 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{3S554HLE7YGYCDBM6F3T6TD43U}

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	2026-05-18T01:22:31.977652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dcbbde1d64fe0d810c2cf1773f4c7cdd031f36ec044a13d99be2525f3c2b0288

Aliases

arxiv: 1601.04698 · arxiv_version: 1601.04698v1 · doi: 10.48550/arxiv.1601.04698 · pith_short_12: 3S554HLE7YGY · pith_short_16: 3S554HLE7YGYCDBM · pith_short_8: 3S554HLE

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/3S554HLE7YGYCDBM6F3T6TD43U \
  | 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: dcbbde1d64fe0d810c2cf1773f4c7cdd031f36ec044a13d99be2525f3c2b0288

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20e16896c3c00148fefc6e458f5ff02cdb5b8578500c956adbfd41c27b1ab8ae",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2016-01-16T21:22:22Z",
    "title_canon_sha256": "5227a2137fe78610ee34c9fed137a2ebcc40847cc9cc9edeb460601e52e7bb2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.04698",
    "kind": "arxiv",
    "version": 1
  }
}