Pith Number

pith:Z6MCRJAI

pith:2021:Z6MCRJAISD7WDXBPUKZFMJLVIP

not attested not anchored not stored refs pending

Optimal quantum discrimination of single-qubit unitary gates between two candidates

Akihito Soeda, Atsushi Shimbo, Mio Murao

arxiv:2103.08208 v2 · 2021-03-15 · 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{Z6MCRJAISD7WDXBPUKZFMJLVIP}

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	2026-07-05T03:08:44.573565Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf9828a40890ff61dc2fa2b256257543fc887839bfcbefc3e7c7358bc5507a07

Aliases

arxiv: 2103.08208 · arxiv_version: 2103.08208v2 · doi: 10.48550/arxiv.2103.08208 · pith_short_12: Z6MCRJAISD7W · pith_short_16: Z6MCRJAISD7WDXBP · pith_short_8: Z6MCRJAI

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/Z6MCRJAISD7WDXBPUKZFMJLVIP \
  | 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: cf9828a40890ff61dc2fa2b256257543fc887839bfcbefc3e7c7358bc5507a07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "860b67fe74c4bac66d8b18e5133c6d165879af345e053511ed4b837f5b0da781",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-03-15T08:36:16Z",
    "title_canon_sha256": "b39cffc84b8ead4a9c470cd3a31954323a1f0a5c7d5d5a41025b3fdef33ae9c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.08208",
    "kind": "arxiv",
    "version": 2
  }
}