Pith Number

pith:B6ZLJCUK

pith:2000:B6ZLJCUKVPNUVSR6GNYRSTZFON

not attested not anchored not stored refs pending

A quantum computer only needs one universe

A. M. Steane

arxiv:quant-ph/0003084 v3 · 2000-03-20 · 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{B6ZLJCUKVPNUVSR6GNYRSTZFON}

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	2026-05-18T02:50:10.970880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fb2b48a8aabdb4aca3e3371194f25737724fa1c3da5a30ccac2c4dd94979336

Aliases

arxiv: quant-ph/0003084 · arxiv_version: quant-ph/0003084v3 · doi: 10.48550/arxiv.quant-ph/0003084 · pith_short_12: B6ZLJCUKVPNU · pith_short_16: B6ZLJCUKVPNUVSR6 · pith_short_8: B6ZLJCUK

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/B6ZLJCUKVPNUVSR6GNYRSTZFON \
  | 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: 0fb2b48a8aabdb4aca3e3371194f25737724fa1c3da5a30ccac2c4dd94979336

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ca4a1e9c3305f0992dd7948f926de779a80d516a83d92b1db2a3fac581fe151",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2000-03-20T12:07:54Z",
    "title_canon_sha256": "471a98833ad03019130cdb14f56b804fb288a75638edce6b3d102f2108cdfa10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0003084",
    "kind": "arxiv",
    "version": 3
  }
}