Pith Number

pith:O2Y2W5TI

pith:2009:O2Y2W5TI7AN7D4LCELUEGN3WDZ

not attested not anchored not stored refs pending

Hybrid hypercomputing: towards a unification of quantum and classical computation

Dominic Horsman, William J. Munro

arxiv:0908.2181 v1 · 2009-08-15 · 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{O2Y2W5TI7AN7D4LCELUEGN3WDZ}

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	2026-07-05T06:02:43.050284Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76b1ab7668f81bf1f16222e84337761e7e468c090c5116ee5950995bcab4e62c

Aliases

arxiv: 0908.2181 · arxiv_version: 0908.2181v1 · doi: 10.48550/arxiv.0908.2181 · pith_short_12: O2Y2W5TI7AN7 · pith_short_16: O2Y2W5TI7AN7D4LC · pith_short_8: O2Y2W5TI

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/O2Y2W5TI7AN7D4LCELUEGN3WDZ \
  | 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: 76b1ab7668f81bf1f16222e84337761e7e468c090c5116ee5950995bcab4e62c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01bc79a3fa1659bbabfedd4d29fc41c4638ca533a5ac0abcdac5725f156391b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-08-15T13:33:58Z",
    "title_canon_sha256": "da594cf1a7245060825177157ad607a7ab43cb621614e5d2187c4ff48072d9bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2181",
    "kind": "arxiv",
    "version": 1
  }
}