Pith Number

pith:VE2HZ3VQ

pith:2001:VE2HZ3VQY7BCOY34UTAOBECB4S

not attested not anchored not stored refs pending

Restoration of Entanglement by Spectral Filters

K. Matsumoto, K. Nakamura, K. Usami, S. Ishizaka, T. Hiroshima, Y. Nambu, Y. Tsuda

arxiv:quant-ph/0107121 v1 · 2001-07-24 · 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{VE2HZ3VQY7BCOY34UTAOBECB4S}

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	2026-07-04T14:45:40.567952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9347ceeb0c7c227637ca4c0e09041e49778410699c3deb926f8a241d0b8dff3

Aliases

arxiv: quant-ph/0107121 · arxiv_version: quant-ph/0107121v1 · doi: 10.48550/arxiv.quant-ph/0107121 · pith_short_12: VE2HZ3VQY7BC · pith_short_16: VE2HZ3VQY7BCOY34 · pith_short_8: VE2HZ3VQ

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/VE2HZ3VQY7BCOY34UTAOBECB4S \
  | 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: a9347ceeb0c7c227637ca4c0e09041e49778410699c3deb926f8a241d0b8dff3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9553d052bae18d2f69c6fdcc717a70ab3f258e0e54f681009b1c81d784834ad",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2001-07-24T10:03:49Z",
    "title_canon_sha256": "673c246bfdc0415bca74fc381db0c8056a22cc5de9177cfb8550713e11e8b0d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0107121",
    "kind": "arxiv",
    "version": 1
  }
}