Pith Number

pith:4Q2VNN2A

pith:2000:4Q2VNN2APPSKECEREAMY67TNPT

not attested not anchored not stored refs pending

Experiments towards quantum information with trapped Calcium ions

A. B. Mundt, C. Roos, D. Leibfried, F. Schmidt-Kaler, G. Reymond, H. Rohde, J. Eschner, M. Lederbauer, P. Barton, R. Blatt, S. Gulde

arxiv:quant-ph/0009105 v1 · 2000-09-26 · 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{4Q2VNN2APPSKECEREAMY67TNPT}

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	2026-07-04T16:23:02.551069Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e43556b7407be4a2089120198f7e6d7cf31abf4ec41b7d276cfdf2a652f5d68c

Aliases

arxiv: quant-ph/0009105 · arxiv_version: quant-ph/0009105v1 · doi: 10.48550/arxiv.quant-ph/0009105 · pith_short_12: 4Q2VNN2APPSK · pith_short_16: 4Q2VNN2APPSKECER · pith_short_8: 4Q2VNN2A

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/4Q2VNN2APPSKECEREAMY67TNPT \
  | 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: e43556b7407be4a2089120198f7e6d7cf31abf4ec41b7d276cfdf2a652f5d68c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf877f424defdff039b18d5dbba79e2c439e02b3f3fefe64a482e5280e3986c5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2000-09-26T13:53:49Z",
    "title_canon_sha256": "93bb84435e2e5db091107bb1d51ce2cfa7cc55a9694669e6e10cd87324ca0904"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0009105",
    "kind": "arxiv",
    "version": 1
  }
}