Pith Number

pith:GKRFUTQB

pith:2017:GKRFUTQBJKMLKEQTGBFTJ3ZT7X

not attested not anchored not stored refs pending

Design, fabrication and characterization of Computer Generated Holograms for anti-counterfeiting applications using OAM beams as light decoders

Erfan Mafakheri, Filippo Romanato, Gianluca Ruffato, Michele Massari, Pietro Capaldo, Roberto Rossi

arxiv:1708.01108 v1 · 2017-08-03 · 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{GKRFUTQBJKMLKEQTGBFTJ3ZT7X}

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	2026-05-18T00:10:39.244332Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32a25a4e014a98b51213304b34ef33fdc4963ac39fd5f0b9a59a2bd5610f16e9

Aliases

arxiv: 1708.01108 · arxiv_version: 1708.01108v1 · doi: 10.48550/arxiv.1708.01108 · pith_short_12: GKRFUTQBJKML · pith_short_16: GKRFUTQBJKMLKEQT · pith_short_8: GKRFUTQB

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/GKRFUTQBJKMLKEQTGBFTJ3ZT7X \
  | 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: 32a25a4e014a98b51213304b34ef33fdc4963ac39fd5f0b9a59a2bd5610f16e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "522f1e6aeeb1b61f48c634dfa231ea86d140b6beb3d0a71b70678f44121d9edd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2017-08-03T11:57:33Z",
    "title_canon_sha256": "7aa806784b654e64cb9a45b4eb88bff1ff88723e851481fee0c677a7a67d9e6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.01108",
    "kind": "arxiv",
    "version": 1
  }
}