Pith Number

pith:WHOIQWUL

pith:2018:WHOIQWULVUQR3XSFLXIRRWQIZH

not attested not anchored not stored refs pending

A self-injection locked DBR laser for laser cooling of beryllium ions

Piet O. Schmidt, Premjith Thekkeppatt, Steven A. King, Tobias Leopold

arxiv:1805.10162 v1 · 2018-05-25 · physics.ins-det · 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{WHOIQWULVUQR3XSFLXIRRWQIZH}

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	2026-05-18T00:00:55.620976Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1dc885a8bad211dde455dd118da08c9f070bef2658b341dd6ce5dac625c5714

Aliases

arxiv: 1805.10162 · arxiv_version: 1805.10162v1 · doi: 10.48550/arxiv.1805.10162 · pith_short_12: WHOIQWULVUQR · pith_short_16: WHOIQWULVUQR3XSF · pith_short_8: WHOIQWUL

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/WHOIQWULVUQR3XSFLXIRRWQIZH \
  | 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: b1dc885a8bad211dde455dd118da08c9f070bef2658b341dd6ce5dac625c5714

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74f57f00e65b53dca70c0a6f3a7c3411a342a74016fe789b869269c168e5f44c",
    "cross_cats_sorted": [
      "physics.atom-ph",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2018-05-25T14:00:13Z",
    "title_canon_sha256": "98f5197e062b6033f80d646181f9009e53a78ed4f8a2ebcc284295d66d5e43a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.10162",
    "kind": "arxiv",
    "version": 1
  }
}