Pith Number

pith:32RYVWES

pith:2025:32RYVWEST5ZSK4OLVHNPYHEMSX

not attested not anchored not stored refs pending

Femtojoule-per-operation photonic computer for the subset sum problem

Chu-Han Wang, Jie Ma, Ka-Di Zhu, Tian-Yu Zhang, Wen-Hao Zhou, Xian-Min Jin, Xiao-wei Wang, Xiao-Yun Xu, Yi-Jun Chang, Ying-Yue Yang

arxiv:2508.17274 v1 · 2025-08-24 · physics.optics · quant-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{32RYVWEST5ZSK4OLVHNPYHEMSX}

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	2026-07-05T11:58:38.939412Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dea38ad8929f732571cba9dafc1c8c95f55b32be3195547d2bfdf4743c1aa20e

Aliases

arxiv: 2508.17274 · arxiv_version: 2508.17274v1 · doi: 10.48550/arxiv.2508.17274 · pith_short_12: 32RYVWEST5ZS · pith_short_16: 32RYVWEST5ZSK4OL · pith_short_8: 32RYVWES

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/32RYVWEST5ZSK4OLVHNPYHEMSX \
  | 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: dea38ad8929f732571cba9dafc1c8c95f55b32be3195547d2bfdf4743c1aa20e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34a9ab5d9a0e758053addb8612f0b61e6a878018bc0a8612fd19b3d76471400e",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-08-24T09:48:16Z",
    "title_canon_sha256": "8ce9e20b9e3cee592a008faf3e4534a319d27e07056167adc4255455ab77c72f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.17274",
    "kind": "arxiv",
    "version": 1
  }
}