Pith Number

pith:P4DOZPDT

pith:2026:P4DOZPDTM5A6UFDZTNL55DMYBO

not attested not anchored not stored refs pending

Full-state information-disturbance tradeoff for direction estimation with antiparallel spin-coherent pairs

Massimiliano F. Sacchi

arxiv:2606.18040 v1 · 2026-06-16 · 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{P4DOZPDTM5A6UFDZTNL55DMYBO}

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	2026-06-19T16:10:46.594844Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f06ecbc736741ea14799b57de8d980b93ac142028ac222204e54cc463bbd628

Aliases

arxiv: 2606.18040 · arxiv_version: 2606.18040v1 · doi: 10.48550/arxiv.2606.18040 · pith_short_12: P4DOZPDTM5A6 · pith_short_16: P4DOZPDTM5A6UFDZ · pith_short_8: P4DOZPDT

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/P4DOZPDTM5A6UFDZTNL55DMYBO \
  | 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: 7f06ecbc736741ea14799b57de8d980b93ac142028ac222204e54cc463bbd628

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8cc0da678ef2b2516ac643625b534f5ba3f5b2ed17c98f783dd29e26a94fa887",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-06-16T15:17:37Z",
    "title_canon_sha256": "3d308a928e604faeb683e0c74430bdeed6be6714764601e9b9438d2e5ec1b889"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.18040",
    "kind": "arxiv",
    "version": 1
  }
}