Pith Number

pith:J2P2HHHD

pith:2018:J2P2HHHDCIAYNKL56SQDTSKAZG

not attested not anchored not stored refs pending

Spectrally and Power Efficient Optical Communication Systems

Jose Krause Perin

arxiv:1806.01945 v1 · 2018-06-05 · eess.SP · physics.app-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J2P2HHHDCIAYNKL56SQDTSKAZG}

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	2026-05-18T00:14:03.332672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e9fa39ce3120186a97df4a039c940c99de6948ee20a7796a616654d7e74afb7

Aliases

arxiv: 1806.01945 · arxiv_version: 1806.01945v1 · doi: 10.48550/arxiv.1806.01945 · pith_short_12: J2P2HHHDCIAY · pith_short_16: J2P2HHHDCIAYNKL5 · pith_short_8: J2P2HHHD

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/J2P2HHHDCIAYNKL56SQDTSKAZG \
  | 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: 4e9fa39ce3120186a97df4a039c940c99de6948ee20a7796a616654d7e74afb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69402ed72833fdbdca37748ff0293a7f6fb6e077c809b64af6e5d187eb3714e8",
    "cross_cats_sorted": [
      "physics.app-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2018-06-05T21:50:26Z",
    "title_canon_sha256": "8d37952f890d52e1ea335f9042558f85977a00bd9c53da7f4e753c9465363991"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.01945",
    "kind": "arxiv",
    "version": 1
  }
}