Pith Number

pith:JQA7QU7Y

pith:2012:JQA7QU7Y2ZW5PYDKEPPL4IEYNB

not attested not anchored not stored refs pending

Physical Realizability of Multi-Level Quantum Systems

I. R. Petersen, Luis A. Duffaut Espinosa, M. R. James, V. Ugrinovskii, Zibo Miao

arxiv:1208.3516 v1 · 2012-08-17 · math.OC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JQA7QU7Y2ZW5PYDKEPPL4IEYNB}

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	2026-05-18T03:48:35.026060Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c01f853f8d66dd7e06a23debe2098685bcfb26027527ccda92b7369cbc13f4a

Aliases

arxiv: 1208.3516 · arxiv_version: 1208.3516v1 · doi: 10.48550/arxiv.1208.3516 · pith_short_12: JQA7QU7Y2ZW5 · pith_short_16: JQA7QU7Y2ZW5PYDK · pith_short_8: JQA7QU7Y

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/JQA7QU7Y2ZW5PYDKEPPL4IEYNB \
  | 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: 4c01f853f8d66dd7e06a23debe2098685bcfb26027527ccda92b7369cbc13f4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84c6f169fd7b24877add058bfa73516c60c0a4dbd20bdbbfe49327b5800771bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-08-17T01:19:59Z",
    "title_canon_sha256": "9536076196972932af275608002c9c33dc4b5fe74de67fcc8f8e259864aaf43a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.3516",
    "kind": "arxiv",
    "version": 1
  }
}