Pith Number

pith:WCS5WUC3

pith:2019:WCS5WUC3U6DJFGTJHS45BTH5XH

not attested not anchored not stored refs pending

Frequency comb spectroscopy

Nathalie Picqu\'e, Theodor W. H\"ansch

arxiv:1902.11249 v1 · 2019-02-28 · physics.optics · physics.atom-ph · physics.chem-ph · physics.ins-det

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WCS5WUC3U6DJFGTJHS45BTH5XH}

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	2026-05-17T23:52:25.097125Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0a5db505ba786929a693cb9d0ccfdb9c6bb536847d0b4b0c2b41916b0cebb2e

Aliases

arxiv: 1902.11249 · arxiv_version: 1902.11249v1 · doi: 10.48550/arxiv.1902.11249 · pith_short_12: WCS5WUC3U6DJ · pith_short_16: WCS5WUC3U6DJFGTJ · pith_short_8: WCS5WUC3

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/WCS5WUC3U6DJFGTJHS45BTH5XH \
  | 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: b0a5db505ba786929a693cb9d0ccfdb9c6bb536847d0b4b0c2b41916b0cebb2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2012d62aeaae17631077623180e1d5a7ba21453db9e5537ad749027b159b4b64",
    "cross_cats_sorted": [
      "physics.atom-ph",
      "physics.chem-ph",
      "physics.ins-det"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-02-28T17:54:20Z",
    "title_canon_sha256": "893a1cb833030dca02a6d507464a776c2fb6deb97ad3a129afa2053492f0552b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.11249",
    "kind": "arxiv",
    "version": 1
  }
}