Pith Number

pith:PZLJSXDQ

pith:2021:PZLJSXDQNNAHIVZ3KWRGWMKE3S

not attested not anchored not stored refs pending

A graph-based formalism for surface codes and twists

Rahul Sarkar, Theodore J. Yoder

arxiv:2101.09349 v4 · 2021-01-22 · quant-ph · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PZLJSXDQNNAHIVZ3KWRGWMKE3S}

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	2026-07-05T08:47:03.167255Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e56995c706b4074573b55a26b3144dc8d9e3e6c1ce314d478c8ce99bd953e73

Aliases

arxiv: 2101.09349 · arxiv_version: 2101.09349v4 · doi: 10.48550/arxiv.2101.09349 · pith_short_12: PZLJSXDQNNAH · pith_short_16: PZLJSXDQNNAHIVZ3 · pith_short_8: PZLJSXDQ

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/PZLJSXDQNNAHIVZ3KWRGWMKE3S \
  | 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: 7e56995c706b4074573b55a26b3144dc8d9e3e6c1ce314d478c8ce99bd953e73

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5048ac9bb4b1a6145409cd115623a9b1835c1742d261f0ecba545a0766532c7a",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-01-22T22:08:56Z",
    "title_canon_sha256": "855fec2ab2923f8a440e4d35c187dbe6c96cb84a02adc1b2232cc663831ecfa7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.09349",
    "kind": "arxiv",
    "version": 4
  }
}