Pith Number

pith:67J74WJH

pith:2025:67J74WJHQIBQWRZKIFHVAD4FO7

not attested not anchored not stored refs pending

Bright 25-attosecond light pulses reach the one atomic unit of time

Chii-Dong Lin, Christoph H. Keitel, Hao Liang, Jingsong Gao, Mahmudul Hasan, Meng Han, Ming-Chang Chen, Ming-Shian Tsai, Yiming Yuan, Yunquan Liu, Zach Eisenhutt

arxiv:2508.14774 v1 · 2025-08-20 · physics.atom-ph · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{67J74WJHQIBQWRZKIFHVAD4FO7}

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.

Cited by

1 paper in Pith

6.2-GW tabletop attosecond light source

Receipt and verification

First computed	2026-07-05T11:56:38.267226Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7d3fe592782030b472a414f500f8577c9853c90a573854066582984217cc56b

Aliases

arxiv: 2508.14774 · arxiv_version: 2508.14774v1 · doi: 10.48550/arxiv.2508.14774 · pith_short_12: 67J74WJHQIBQ · pith_short_16: 67J74WJHQIBQWRZK · pith_short_8: 67J74WJH

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/67J74WJHQIBQWRZKIFHVAD4FO7 \
  | 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: f7d3fe592782030b472a414f500f8577c9853c90a573854066582984217cc56b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "166b10fc96fe6c2a5d704aadf74b7d1e953f9357097646889c577127936a137b",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2025-08-20T15:20:55Z",
    "title_canon_sha256": "467782cc8ab6f0e540d2f63bfdea1350138ef6455b2cb703ef00339372a39dce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.14774",
    "kind": "arxiv",
    "version": 1
  }
}