Pith Number

pith:5UTSBVTA

pith:2012:5UTSBVTAWQBPCKMFXU4ZW4GFBQ

not attested not anchored not stored refs pending

Sub-Heisenberg estimation strategies are ineffective

Lorenzo Maccone, Vittorio Giovannetti

arxiv:1201.1878 v2 · 2012-01-09 · 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{5UTSBVTAWQBPCKMFXU4ZW4GFBQ}

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	2026-05-18T03:55:02.702077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed2720d660b402f12985bd399b70c50c3d2a6b858a0f19f83ec29b591cc83d71

Aliases

arxiv: 1201.1878 · arxiv_version: 1201.1878v2 · doi: 10.48550/arxiv.1201.1878 · pith_short_12: 5UTSBVTAWQBP · pith_short_16: 5UTSBVTAWQBPCKMF · pith_short_8: 5UTSBVTA

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/5UTSBVTAWQBPCKMFXU4ZW4GFBQ \
  | 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: ed2720d660b402f12985bd399b70c50c3d2a6b858a0f19f83ec29b591cc83d71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7dfd137d459fc6790223512f636ed995d5773220295fc84e9a3ea7f551b2d090",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-01-09T19:26:45Z",
    "title_canon_sha256": "4dab436b23d5700a5b9ae55107fb21a710d83c512ffe008c490a7763de1229a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1878",
    "kind": "arxiv",
    "version": 2
  }
}