Pith Number

pith:4VHETCFR

pith:2019:4VHETCFRBM6WRWVR5YG3HB2KFL

not attested not anchored not stored refs pending

946-nm Nd:YAG digital-locked laser at $1.1\times10^{-16}$ in 1 s and transfer-locked to a cryogenic silicon cavity

A. Didier, E. Benkler, M. Okhapkin, S. Ignatovich, T. E. Mehlst\"aubler

arxiv:1902.07012 v2 · 2019-02-19 · 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{4VHETCFRBM6WRWVR5YG3HB2KFL}

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	2026-05-17T23:49:54.848433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e54e4988b10b3d68dab1ee0db3874a2afe7fe23f858c8978004dc96432bb149c

Aliases

arxiv: 1902.07012 · arxiv_version: 1902.07012v2 · doi: 10.48550/arxiv.1902.07012 · pith_short_12: 4VHETCFRBM6W · pith_short_16: 4VHETCFRBM6WRWVR · pith_short_8: 4VHETCFR

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/4VHETCFRBM6WRWVR5YG3HB2KFL \
  | 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: e54e4988b10b3d68dab1ee0db3874a2afe7fe23f858c8978004dc96432bb149c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "652206b5a515f9dd94560a37257160749fb3f0995e2aa8e3fa0c968fc4a35735",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-02-19T12:09:25Z",
    "title_canon_sha256": "fefd9538570e1024e24098157c86f454309e785332bd19b20878f991fe0588cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.07012",
    "kind": "arxiv",
    "version": 2
  }
}