Pith Number

pith:TZ3RKMCJ

pith:2019:TZ3RKMCJ6XUKMKBZ3OMPXINZG2

not attested not anchored not stored refs pending

Necessary and Sufficient Conditions on Measurements of Quantum Channels

Carlo Maria Scandolo, Gilad Gour, Giulio Chiribella, John Burniston, Michael Grabowecky

arxiv:1904.09161 v5 · 2019-04-17 · 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{TZ3RKMCJ6XUKMKBZ3OMPXINZG2}

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	2026-07-05T00:59:02.491238Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e77153049f5e8a62839db98fba1b9368b88d28ed6fb99615db5ce5c4f702f97

Aliases

arxiv: 1904.09161 · arxiv_version: 1904.09161v5 · doi: 10.48550/arxiv.1904.09161 · pith_short_12: TZ3RKMCJ6XUK · pith_short_16: TZ3RKMCJ6XUKMKBZ · pith_short_8: TZ3RKMCJ

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/TZ3RKMCJ6XUKMKBZ3OMPXINZG2 \
  | 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: 9e77153049f5e8a62839db98fba1b9368b88d28ed6fb99615db5ce5c4f702f97

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "811c2c14fb247b94b9730ce4cacd955071fc581f2761610dc21840c2b6c785fb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-04-17T23:42:26Z",
    "title_canon_sha256": "6738feaeebf571f707ca1ee657c200c8dd2075ce3338b57d2f568120686e00c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09161",
    "kind": "arxiv",
    "version": 5
  }
}