Pith Number

pith:QFY7ZDSQ

pith:2013:QFY7ZDSQNUAMUIYGRH7WLIZ6TY

not attested not anchored not stored refs pending

Operational Gaussian Schmidt-Number Witnesses

Farid Shahandeh, Jan Sperling, Werner Vogel

arxiv:1309.6508 v2 · 2013-09-25 · 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{QFY7ZDSQNUAMUIYGRH7WLIZ6TY}

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	2026-05-18T03:03:44.068945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8171fc8e506d00ca230689ff65a33e9e2f967cdc3eb602db908d8e162569d0fd

Aliases

arxiv: 1309.6508 · arxiv_version: 1309.6508v2 · doi: 10.48550/arxiv.1309.6508 · pith_short_12: QFY7ZDSQNUAM · pith_short_16: QFY7ZDSQNUAMUIYG · pith_short_8: QFY7ZDSQ

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/QFY7ZDSQNUAMUIYGRH7WLIZ6TY \
  | 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: 8171fc8e506d00ca230689ff65a33e9e2f967cdc3eb602db908d8e162569d0fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d55d5b701ae619bd74c1113f74d9ca1d969aa6e2e6e1aa1d9cb72a23964117d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-09-25T14:00:54Z",
    "title_canon_sha256": "5ec1c309a5f6eda093d2eb9807a117a9a0d9ba566ecc41c496f5371ff935675d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.6508",
    "kind": "arxiv",
    "version": 2
  }
}