Pith Number

pith:S5SJIPND

pith:2022:S5SJIPNDOWQ6NXNFT6RMGP3PJ6

not attested not anchored not stored refs pending

The platypus of the quantum channel zoo

Debbie Leung, Felix Leditzky, Graeme Smith, John A. Smolin, Vikesh Siddhu

arxiv:2202.08380 v2 · 2022-02-16 · quant-ph · cs.IT · math.IT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S5SJIPNDOWQ6NXNFT6RMGP3PJ6}

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	2026-07-05T06:19:51.713805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9764943da375a1e6dda59fa2c33f6f4fa7a96b4707f55300a763eda9648f0b09

Aliases

arxiv: 2202.08380 · arxiv_version: 2202.08380v2 · doi: 10.48550/arxiv.2202.08380 · pith_short_12: S5SJIPNDOWQ6 · pith_short_16: S5SJIPNDOWQ6NXNF · pith_short_8: S5SJIPND

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/S5SJIPNDOWQ6NXNFT6RMGP3PJ6 \
  | 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: 9764943da375a1e6dda59fa2c33f6f4fa7a96b4707f55300a763eda9648f0b09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fe38adcfab3a0d34ffe97363b235f5f5199127806eac41aea05b24e3c64dc54",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2022-02-16T23:54:07Z",
    "title_canon_sha256": "d72b8bb9268be56f592186688e3b056025425557def5864c8d563b6d598f9ce2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.08380",
    "kind": "arxiv",
    "version": 2
  }
}