Pith Number

pith:7K4ZGF7Y

pith:1996:7K4ZGF7Y5R4MLJTBVCIHJKQBYD

not attested not anchored not stored refs pending

Perfect quantum error correction coding in 24 laser pulses

John A. Smolin, Samuel L. Braunstein

arxiv:quant-ph/9604036 v2 · 1996-04-29 · 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{7K4ZGF7Y5R4MLJTBVCIHJKQBYD}

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	2026-07-04T16:02:39.644736Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fab99317f8ec78c5a661a89074aa01c0f36f36f9b70428a27dae69b80ff05e6f

Aliases

arxiv: quant-ph/9604036 · arxiv_version: quant-ph/9604036v2 · doi: 10.48550/arxiv.quant-ph/9604036 · pith_short_12: 7K4ZGF7Y5R4M · pith_short_16: 7K4ZGF7Y5R4MLJTB · pith_short_8: 7K4ZGF7Y

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/7K4ZGF7Y5R4MLJTBVCIHJKQBYD \
  | 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: fab99317f8ec78c5a661a89074aa01c0f36f36f9b70428a27dae69b80ff05e6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03435d6f26fb707c4dfeffd03ee977a690150070213c61fa7e92f02f36988a06",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1996-04-29T09:50:09Z",
    "title_canon_sha256": "013fa0a87c3da70524528fa01b38c15a8ee01494c639c6a1fa5eea78b08cb21d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9604036",
    "kind": "arxiv",
    "version": 2
  }
}