Pith Number

pith:VUFWBGLP

pith:2020:VUFWBGLP3LCHXIFFOGICC23GGF

not attested not anchored not stored refs pending

A Spatial Time-Frequency Hopping Index Modulated Scheme in Turbulence-free Optical Wireless Communication Channels

Alexandre Wagemakers, Francisco J. Escribano, Georges Kaddoum, Joao V. C. Evangelista

arxiv:2004.03008 v4 · 2020-04-06 · cs.IT · eess.SP · math.IT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VUFWBGLP3LCHXIFFOGICC23GGF}

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	2026-07-05T00:56:49.219723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad0b60996fdac47ba0a57190216b663151f4bbc3a5aafdd4bc0203edc5bd4ae7

Aliases

arxiv: 2004.03008 · arxiv_version: 2004.03008v4 · doi: 10.48550/arxiv.2004.03008 · pith_short_12: VUFWBGLP3LCH · pith_short_16: VUFWBGLP3LCHXIFF · pith_short_8: VUFWBGLP

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/VUFWBGLP3LCHXIFFOGICC23GGF \
  | 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: ad0b60996fdac47ba0a57190216b663151f4bbc3a5aafdd4bc0203edc5bd4ae7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f08912c4d82e195130547cd5977874a47156eb2bc884486f7533fe165c8d4124",
    "cross_cats_sorted": [
      "eess.SP",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2020-04-06T21:38:06Z",
    "title_canon_sha256": "755763a3643f18d41636399382b51595f14eefe9e393426076e4420626ceff0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.03008",
    "kind": "arxiv",
    "version": 4
  }
}