Pith Number

pith:HUYNWHBJ

pith:2026:HUYNWHBJRUT7QHBMH7NXLIBLJV

not attested not anchored not stored refs pending

Notes from the Physics Teaching Lab: Rubidium Atomic Spectroscopy

Kenneth G. Libbrecht

arxiv:2606.31696 v1 · 2026-06-30 · physics.ed-ph · 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{HUYNWHBJRUT7QHBMH7NXLIBLJV}

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	2026-07-01T01:18:12.060045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d30db1c298d27f81c2c3fdb75a02b4d6b95b7f06f3d61796ec5af8629dae631

Aliases

arxiv: 2606.31696 · arxiv_version: 2606.31696v1 · doi: 10.48550/arxiv.2606.31696 · pith_short_12: HUYNWHBJRUT7 · pith_short_16: HUYNWHBJRUT7QHBM · pith_short_8: HUYNWHBJ

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/HUYNWHBJRUT7QHBMH7NXLIBLJV \
  | 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: 3d30db1c298d27f81c2c3fdb75a02b4d6b95b7f06f3d61796ec5af8629dae631

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f8339021dc4bf0395d9052da5fff9f3b63d6b327df074a10bcf4ab678d38202",
    "cross_cats_sorted": [
      "physics.atom-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2026-06-30T14:08:06Z",
    "title_canon_sha256": "ddb6b82478e73d241216a96bf2b25c3f12c21b749d809904c395a2ecf5645686"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.31696",
    "kind": "arxiv",
    "version": 1
  }
}