Pith Number

pith:2VIFTFUX

pith:2020:2VIFTFUX4UNZ2X6KBHMAAZUJJI

not attested not anchored not stored refs pending

Approximate Approximation on a Quantum Annealer

Claudia Linnhoff-Popien, Irmi Sax, Sebastian Feld, Sebastian Zielinski, Thomas Gabor, Wolfgang Mauerer

arxiv:2004.09267 v1 · 2020-04-20 · 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{2VIFTFUX4UNZ2X6KBHMAAZUJJI}

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	2026-07-05T00:59:36.569190Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d550599697e51b9d5fca09d80066894a050a50538c0c3dade5d8c1da33a27f09

Aliases

arxiv: 2004.09267 · arxiv_version: 2004.09267v1 · doi: 10.48550/arxiv.2004.09267 · pith_short_12: 2VIFTFUX4UNZ · pith_short_16: 2VIFTFUX4UNZ2X6K · pith_short_8: 2VIFTFUX

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/2VIFTFUX4UNZ2X6KBHMAAZUJJI \
  | 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: d550599697e51b9d5fca09d80066894a050a50538c0c3dade5d8c1da33a27f09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "758ecd48b1ddf831af7e0236560a0659ac768ca6b777e667131689644756823e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-04-20T13:15:20Z",
    "title_canon_sha256": "7919db0a57e05d006c53624a5fb6bbce920fa528e454f58088ce5fca69b01930"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.09267",
    "kind": "arxiv",
    "version": 1
  }
}