Pith Number

pith:6QSNJ5M7

pith:2005:6QSNJ5M7B3NWUS6VFRAC5H2YUC

not attested not anchored not stored refs pending

Optimal Time-Reversal of Multi-phase Equatorial States

Chiara Macchiavello, Francesco Buscemi, Giacomo Mauro D'Ariano

arxiv:quant-ph/0504016 v2 · 2005-04-04 · 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{6QSNJ5M7B3NWUS6VFRAC5H2YUC}

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	2026-05-18T03:14:41.349239Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f424d4f59f0edb6a4bd52c402e9f58a0b35e51810333dbee50c4f8d803caa0e9

Aliases

arxiv: quant-ph/0504016 · arxiv_version: quant-ph/0504016v2 · doi: 10.48550/arxiv.quant-ph/0504016 · pith_short_12: 6QSNJ5M7B3NW · pith_short_16: 6QSNJ5M7B3NWUS6V · pith_short_8: 6QSNJ5M7

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/6QSNJ5M7B3NWUS6VFRAC5H2YUC \
  | 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: f424d4f59f0edb6a4bd52c402e9f58a0b35e51810333dbee50c4f8d803caa0e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48dbc86687d75eb1f1dae568d6cb2453a453f84705bdd45176beeac42f55717e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-04-04T09:27:31Z",
    "title_canon_sha256": "b31c9dd0125dbd32c3825fb5e3b9f6ea8e436c350554d6c2eeb55a2a53b2b521"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0504016",
    "kind": "arxiv",
    "version": 2
  }
}