Pith Number

pith:VVWUUVL5

pith:2012:VVWUUVL5CGHY3OVZA3VWONDVSJ

not attested not anchored not stored refs pending

Self-calibrating tomography for multi-dimensional systems

Agata M. Bra\'nczyk, Daniel F. V. James, Nicol\'as Quesada

arxiv:1212.0556 v2 · 2012-12-03 · 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{VVWUUVL5CGHY3OVZA3VWONDVSJ}

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	2026-05-18T03:20:06.545331Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad6d4a557d118f8dbab906eb673475925d6284f09fb6960e9a82b2305bcad59c

Aliases

arxiv: 1212.0556 · arxiv_version: 1212.0556v2 · doi: 10.48550/arxiv.1212.0556 · pith_short_12: VVWUUVL5CGHY · pith_short_16: VVWUUVL5CGHY3OVZ · pith_short_8: VVWUUVL5

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/VVWUUVL5CGHY3OVZA3VWONDVSJ \
  | 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: ad6d4a557d118f8dbab906eb673475925d6284f09fb6960e9a82b2305bcad59c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d7a9efce1ded5afe3c152a8ab7736fca1c500cb1266638461cd83734a292f79",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-12-03T21:04:35Z",
    "title_canon_sha256": "ee08392ec9878a7c38506bb8dd86c27bd829c3701bd9bcf6720024a9974c8d83"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.0556",
    "kind": "arxiv",
    "version": 2
  }
}