Pith Number

pith:UMSNKZKN

pith:2015:UMSNKZKNZE42GJPT2KXKPHUO6H

not attested not anchored not stored refs pending

A simple 2 W continuous-wave laser system for trapping ultracold metastable helium atoms at the 319.8 nm magic wavelength

R.J. Rengelink, R.P.M.J.W. Notermans, W. Vassen

arxiv:1511.00443 v2 · 2015-11-02 · physics.atom-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{UMSNKZKNZE42GJPT2KXKPHUO6H}

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	2026-05-18T00:18:09.995160Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a324d5654dc939a325f3d2aea79e8ef1d7aceb640f5fc609e87a583c4c3b9bc8

Aliases

arxiv: 1511.00443 · arxiv_version: 1511.00443v2 · doi: 10.48550/arxiv.1511.00443 · pith_short_12: UMSNKZKNZE42 · pith_short_16: UMSNKZKNZE42GJPT · pith_short_8: UMSNKZKN

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/UMSNKZKNZE42GJPT2KXKPHUO6H \
  | 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: a324d5654dc939a325f3d2aea79e8ef1d7aceb640f5fc609e87a583c4c3b9bc8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90b7c683a4e0f029d561be09d7d466a808e301e6960fef0a267cca8684488462",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2015-11-02T11:08:12Z",
    "title_canon_sha256": "5047f102e454e4b69da2a05ce437d632f724b1caf9c72a075a9f9300b0f63d43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.00443",
    "kind": "arxiv",
    "version": 2
  }
}