Pith Number

pith:K6ZQSQHL

pith:2003:K6ZQSQHL5JHZ7FNK3PQAPG3TQO

not attested not anchored not stored refs pending

Optimal measurements for relative quantum information

Robert W. Spekkens, Stephen D. Bartlett, Terry Rudolph

arxiv:quant-ph/0310009 v3 · 2003-10-02 · 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{K6ZQSQHL5JHZ7FNK3PQAPG3TQO}

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	2026-07-04T14:46:25.426754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57b30940ebea4f9f95aadbe0079b7383807710cc763f860d20b667e23a2b7dab

Aliases

arxiv: quant-ph/0310009 · arxiv_version: quant-ph/0310009v3 · doi: 10.48550/arxiv.quant-ph/0310009 · pith_short_12: K6ZQSQHL5JHZ · pith_short_16: K6ZQSQHL5JHZ7FNK · pith_short_8: K6ZQSQHL

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/K6ZQSQHL5JHZ7FNK3PQAPG3TQO \
  | 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: 57b30940ebea4f9f95aadbe0079b7383807710cc763f860d20b667e23a2b7dab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "400a6382467da713d58bdf42506340f601b99f4428fac9d07ab7a8e686ad8830",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2003-10-02T03:58:13Z",
    "title_canon_sha256": "aa68fee1153396621f0beb90046f0d5c03fac65927ab26a03234b470de40ebd3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0310009",
    "kind": "arxiv",
    "version": 3
  }
}