Pith Number

pith:PDZUSWQ5

pith:2009:PDZUSWQ5GQRV6SRIX5RSO2FWM4

not attested not anchored not stored refs pending

Quantum Machines

Mark Hillery, Vladimir Buzek

arxiv:0903.4208 v1 · 2009-03-24 · 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{PDZUSWQ5GQRV6SRIX5RSO2FWM4}

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	2026-05-18T02:14:26.123219Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78f3495a1d34235f4a28bf632768b66709607d3002b3f470b8b4a12f7af47e58

Aliases

arxiv: 0903.4208 · arxiv_version: 0903.4208v1 · doi: 10.48550/arxiv.0903.4208 · pith_short_12: PDZUSWQ5GQRV · pith_short_16: PDZUSWQ5GQRV6SRI · pith_short_8: PDZUSWQ5

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/PDZUSWQ5GQRV6SRIX5RSO2FWM4 \
  | 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: 78f3495a1d34235f4a28bf632768b66709607d3002b3f470b8b4a12f7af47e58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "720ba8ec08ce89dd8c732ffd88d151ff8714d20c3f7874177d17de77c2eb256b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-03-24T21:59:53Z",
    "title_canon_sha256": "03cfcf757ee97ee38300c761d158cdc26d70221b31c0c4ece96a5ef85e95ff88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4208",
    "kind": "arxiv",
    "version": 1
  }
}