Pith Number

pith:AQV4FEX3

pith:2019:AQV4FEX3JHCCQQQS5STMTJWOO7

not attested not anchored not stored refs pending

Closed-cycle, low-vibration 4 K cryostat for ion traps and other applications

J. R. Crespo L\'opez-Urrutia, J. Stark, L. J. Spie{\ss}, L. Schm\"oger, M. Schwarz, P. Micke, P. O. Schmidt, S. A. King, T. Leopold, T. Pfeifer

arxiv:1901.03630 v1 · 2019-01-11 · physics.atom-ph · physics.app-ph · physics.ins-det · 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{AQV4FEX3JHCCQQQS5STMTJWOO7}

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	2026-07-05T01:48:24.578295Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

042bc292fb49c4284212eca6c9a6ce77f7170bbc93a626af9544c65dff00cb41

Aliases

arxiv: 1901.03630 · arxiv_version: 1901.03630v1 · doi: 10.48550/arxiv.1901.03630 · pith_short_12: AQV4FEX3JHCC · pith_short_16: AQV4FEX3JHCCQQQS · pith_short_8: AQV4FEX3

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/AQV4FEX3JHCCQQQS5STMTJWOO7 \
  | 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: 042bc292fb49c4284212eca6c9a6ce77f7170bbc93a626af9544c65dff00cb41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2729fb1e3320a172c1967dc9e726c8c4c2c0808539fb71daa0934f05cab95b54",
    "cross_cats_sorted": [
      "physics.app-ph",
      "physics.ins-det",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2019-01-11T16:17:52Z",
    "title_canon_sha256": "50e51fd9cda7a77173784c371d79c768b297e29ebcc33e9cb8fe956f546af2cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.03630",
    "kind": "arxiv",
    "version": 1
  }
}