Pith Number

pith:56BOZ65L

pith:2009:56BOZ65LZ6BU2VY5SI55ZIBTLE

not attested not anchored not stored refs pending

Optimal experiment design revisited: fair, precise and minimal tomography

B. J. Smith, G. Puentes, I. A. Walmsley, J. Nunn, J. S. Lundeen

arxiv:0911.4310 v1 · 2009-11-22 · 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{56BOZ65LZ6BU2VY5SI55ZIBTLE}

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	2026-05-18T04:08:04.045690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef82ecfbabcf834d571d923bdca033590e24283b72050b8973f307a67f151827

Aliases

arxiv: 0911.4310 · arxiv_version: 0911.4310v1 · doi: 10.48550/arxiv.0911.4310 · pith_short_12: 56BOZ65LZ6BU · pith_short_16: 56BOZ65LZ6BU2VY5 · pith_short_8: 56BOZ65L

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/56BOZ65LZ6BU2VY5SI55ZIBTLE \
  | 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: ef82ecfbabcf834d571d923bdca033590e24283b72050b8973f307a67f151827

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb841f48a36d51f1bfc3487406ddde90eff6229881de0a29bfb73efc62557e22",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-11-22T23:32:36Z",
    "title_canon_sha256": "ab5944d5de8a7abf3f46fb1f036802bcec3d0c84f5877ce00ba4b30e27c5f07e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.4310",
    "kind": "arxiv",
    "version": 1
  }
}