Pith Number

pith:7N3LFZ7M

pith:2026:7N3LFZ7M554NSWPVLK5HFRY5ZH

not attested not anchored not stored refs pending

All-valid-state HOBO encoding for constrained combinatorial optimization on NISQ devices

Daisuke Tsukayama, Hiroshi Imai, Juncheng Wang, Jun-ichi Shirakashi, Koki Awaya, Reo Saito, Takumi Kanezashi, Tetsuo Shibuya

arxiv:2606.20017 v1 · 2026-06-18 · 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{7N3LFZ7M554NSWPVLK5HFRY5ZH}

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	2026-06-19T16:13:00.800345Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb76b2e7ecef78d959f55aba72c71dc9f8bb05e20a468a80f3366032a4dd13c3

Aliases

arxiv: 2606.20017 · arxiv_version: 2606.20017v1 · doi: 10.48550/arxiv.2606.20017 · pith_short_12: 7N3LFZ7M554N · pith_short_16: 7N3LFZ7M554NSWPV · pith_short_8: 7N3LFZ7M

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/7N3LFZ7M554NSWPVLK5HFRY5ZH \
  | 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: fb76b2e7ecef78d959f55aba72c71dc9f8bb05e20a468a80f3366032a4dd13c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "880cf876c7e0cc856e2e7940e044d1a4950228e9b7863dfebffa5d5c98067ab9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-06-18T09:48:47Z",
    "title_canon_sha256": "b3785eb100683cd8120287ff37b409f3d8d25d61b002b4f7f0b65d12e5b87ade"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.20017",
    "kind": "arxiv",
    "version": 1
  }
}