Pith Number

pith:BKR7QPLP

pith:2017:BKR7QPLPAGHZTCK4HAUU66VDNK

not attested not anchored not stored refs pending

Optimal quantum tomography

Alessandro Bisio, Giacomo Mauro D'Ariano, Giulio Chiribella, Paolo Perinotti, Stefano Facchini

arxiv:1702.08751 v1 · 2017-02-28 · 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{BKR7QPLPAGHZTCK4HAUU66VDNK}

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	2026-05-18T00:49:47.973551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0aa3f83d6f018f99895c38294f7aa36a9c916f83216006a2ff488dae0e0ae163

Aliases

arxiv: 1702.08751 · arxiv_version: 1702.08751v1 · doi: 10.48550/arxiv.1702.08751 · pith_short_12: BKR7QPLPAGHZ · pith_short_16: BKR7QPLPAGHZTCK4 · pith_short_8: BKR7QPLP

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/BKR7QPLPAGHZTCK4HAUU66VDNK \
  | 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: 0aa3f83d6f018f99895c38294f7aa36a9c916f83216006a2ff488dae0e0ae163

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "497880760eecceabca96469e4d6c18e746d106cef448638ffdaaab56a9b2917d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-02-28T11:48:02Z",
    "title_canon_sha256": "a3ae272c40684ecf1f2ee6eae51eef3220f4aeccf5476b6e4654e74321c3239a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.08751",
    "kind": "arxiv",
    "version": 1
  }
}