Pith Number

pith:QCP4MR5G

pith:2025:QCP4MR5GCPYSQZ4YCLOBSCQFMQ

not attested not anchored not stored refs pending

A Comb-based Colorless Coherent WDM Transmitter

Brian Stern, Cagri Ozdilek, Di Che, John D. Jost, Kwangwoong Kim, Maxim Karpov, Timofey Shpakovsky

arxiv:2505.21607 v1 · 2025-05-27 · physics.optics · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QCP4MR5GCPYSQZ4YCLOBSCQFMQ}

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	2026-07-05T11:11:00.954599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

809fc647a613f128679812dc190a05640953d4df6f5a6a65ff86e9ee5690438a

Aliases

arxiv: 2505.21607 · arxiv_version: 2505.21607v1 · doi: 10.48550/arxiv.2505.21607 · pith_short_12: QCP4MR5GCPYS · pith_short_16: QCP4MR5GCPYSQZ4Y · pith_short_8: QCP4MR5G

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/QCP4MR5GCPYSQZ4YCLOBSCQFMQ \
  | 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: 809fc647a613f128679812dc190a05640953d4df6f5a6a65ff86e9ee5690438a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4945c381719d48c5b8da8168e12dc0ebbbca1e836dc1af28c093b2cd97cf9bff",
    "cross_cats_sorted": [
      "eess.SP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-05-27T17:56:37Z",
    "title_canon_sha256": "4a95fd953a088e9b8768d942efcad427c5687db648792986d1d90219272a0e3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.21607",
    "kind": "arxiv",
    "version": 1
  }
}