Pith Number

pith:2QJU56ET

pith:2018:2QJU56ETZWGS3JLKPS5CS7XFHK

not attested not anchored not stored refs pending

Holographic Colour Prints: Enhanced Optical Security by Combined Phase and Amplitude Control

Hailong Liu, Joel K. W. Yang, Kevin T. P. Lim, Yejing Liu

arxiv:1805.09457 v1 · 2018-05-24 · 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{2QJU56ETZWGS3JLKPS5CS7XFHK}

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	2026-05-17T23:56:41.315883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4134ef893cd8d2da56a7cba297ee53aa753482bbda7380b9cbab06c665a6f29

Aliases

arxiv: 1805.09457 · arxiv_version: 1805.09457v1 · doi: 10.48550/arxiv.1805.09457 · pith_short_12: 2QJU56ETZWGS · pith_short_16: 2QJU56ETZWGS3JLK · pith_short_8: 2QJU56ET

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/2QJU56ETZWGS3JLKPS5CS7XFHK \
  | 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: d4134ef893cd8d2da56a7cba297ee53aa753482bbda7380b9cbab06c665a6f29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0bdaba5893b4a39a31b1f4f142c8d1367b185aade7926c6506658dc55573bb2b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-05-24T00:12:41Z",
    "title_canon_sha256": "15a5f255a9dc8d977f411676c23273e4eb6a19ef738013ca0dbbe9aed61246ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.09457",
    "kind": "arxiv",
    "version": 1
  }
}