Pith Number

pith:7HU74JSV

pith:1999:7HU74JSVBOCAVXZOBS3IPFNKWK

not attested not anchored not stored refs pending

A Cat-State Benchmark on a Seven Bit Quantum Computer

C.-H. Tseng, E. Knill, R. Laflamme, R. Martinez

arxiv:quant-ph/9908051 v1 · 1999-08-15 · 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{7HU74JSVBOCAVXZOBS3IPFNKWK}

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	2026-07-04T14:47:27.848244Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9e9fe26550b840adf2e0cb68795aab292c71e1f094446de4ffe8c1bc420bf2c

Aliases

arxiv: quant-ph/9908051 · arxiv_version: quant-ph/9908051v1 · doi: 10.48550/arxiv.quant-ph/9908051 · pith_short_12: 7HU74JSVBOCA · pith_short_16: 7HU74JSVBOCAVXZO · pith_short_8: 7HU74JSV

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/7HU74JSVBOCAVXZOBS3IPFNKWK \
  | 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: f9e9fe26550b840adf2e0cb68795aab292c71e1f094446de4ffe8c1bc420bf2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ecdeeadd4beaa6291c6c03bf46b0eed85bad702b62cc08eb537a7b67b5c5300",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1999-08-15T20:52:42Z",
    "title_canon_sha256": "b64c0ab2e07079d38078d09228b8cb1f91b922613585d77cbfcc5a5a823e7cba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9908051",
    "kind": "arxiv",
    "version": 1
  }
}