Pith Number

pith:XT3F6SH7

pith:2013:XT3F6SH77CIIE2YP4FOCSGNINH

not attested not anchored not stored refs pending

Process tomography for unitary quantum channels

Gus Gutoski, Nathaniel Johnston

arxiv:1309.0840 v3 · 2013-09-03 · 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{XT3F6SH77CIIE2YP4FOCSGNINH}

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	2026-05-18T02:55:20.510580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bcf65f48fff890826b0fe15c2919a869f555010bcd826d0a8364ce0b04a7bb40

Aliases

arxiv: 1309.0840 · arxiv_version: 1309.0840v3 · doi: 10.48550/arxiv.1309.0840 · pith_short_12: XT3F6SH77CII · pith_short_16: XT3F6SH77CIIE2YP · pith_short_8: XT3F6SH7

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/XT3F6SH77CIIE2YP4FOCSGNINH \
  | 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: bcf65f48fff890826b0fe15c2919a869f555010bcd826d0a8364ce0b04a7bb40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a8cc2c7f8603f250ac300d6369ea3894e2021b4078839564a63426607a1c20c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-09-03T20:38:11Z",
    "title_canon_sha256": "b74d237cd7197b89ed65d77667d557009f95849987b91ba997191fe9004bf898"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.0840",
    "kind": "arxiv",
    "version": 3
  }
}