Pith Number

pith:S2CDD5SU

pith:2009:S2CDD5SUNYZCKX3FQYIP4JT3BB

not attested not anchored not stored refs pending

Entanglement sudden death and sudden birth in two uncoupled spins

A. Messina, A. Napoli, E. Ferraro, M. Guccione

arxiv:0910.5592 v1 · 2009-10-29 · 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{S2CDD5SUNYZCKX3FQYIP4JT3BB}

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	2026-05-18T00:06:44.375334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

968431f6546e32255f658610fe267b085cd38595c19f5b23f9e0d9d7cc7e5573

Aliases

arxiv: 0910.5592 · arxiv_version: 0910.5592v1 · doi: 10.48550/arxiv.0910.5592 · pith_short_12: S2CDD5SUNYZC · pith_short_16: S2CDD5SUNYZCKX3F · pith_short_8: S2CDD5SU

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/S2CDD5SUNYZCKX3FQYIP4JT3BB \
  | 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: 968431f6546e32255f658610fe267b085cd38595c19f5b23f9e0d9d7cc7e5573

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "190de68e4cb481ab6dc8f4df68ad6d59b7f30530413db3365a96a6414d6c6128",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-10-29T09:36:54Z",
    "title_canon_sha256": "088e3ee36a80323d177fdc4a185a12830b519bfccd4f292ec105c66ccc991ac0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5592",
    "kind": "arxiv",
    "version": 1
  }
}