Pith Number

pith:FYGI42BE

pith:2025:FYGI42BEQICGXEXAZQUEVTOMBN

not attested not anchored not stored refs pending

A chip-based optoelectronic-oscillator frequency comb

Baile Chen, Baoqi Shi, Chen Shen, Dengke Chen, Huanfa Peng, Jijun He, Jinbao Long, Junqiu Liu, Lan Gao, Linze Li, Shichang Li, Shuyi Li, Tianyu Long, Wei Sun, Yi-Han Luo, Zhenyu Li, Zhongkai Wang

arxiv:2502.20802 v1 · 2025-02-28 · physics.optics · 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{FYGI42BEQICGXEXAZQUEVTOMBN}

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	2026-07-05T11:51:22.706835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e0c8e682482046b92e0cc284acdcc0b6e213cad2695bf9142ab5fd99d1f2fb3

Aliases

arxiv: 2502.20802 · arxiv_version: 2502.20802v1 · doi: 10.48550/arxiv.2502.20802 · pith_short_12: FYGI42BEQICG · pith_short_16: FYGI42BEQICGXEXA · pith_short_8: FYGI42BE

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/FYGI42BEQICGXEXAZQUEVTOMBN \
  | 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: 2e0c8e682482046b92e0cc284acdcc0b6e213cad2695bf9142ab5fd99d1f2fb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "850d2a61c9e02a886d3c33cb556d027598d87f8043a08c37c8f8ad56bb6c830e",
    "cross_cats_sorted": [
      "physics.app-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-02-28T07:37:22Z",
    "title_canon_sha256": "f3ba8d0570bc47681ba94d04830aa695ef9c94881c885ebfa7027383cb2281c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.20802",
    "kind": "arxiv",
    "version": 1
  }
}