Pith Number

pith:A4TDUNDN

pith:2000:A4TDUNDND3MYJ4UJTW6AAD4OKY

not attested not anchored not stored refs pending

Recycling of quantum information: Multiple observations of quantum clocks

Bratislava, Hayama, Japan), London, Nobuyuki Imoto (SOKEN, Peter L. Knight (Imperial College, Slovakia), UK), Vladimir Buzek (Inst. Phys. SAS

arxiv:quant-ph/0006048 v1 · 2000-06-09 · 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{A4TDUNDND3MYJ4UJTW6AAD4OKY}

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	2026-07-04T14:45:29.214906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07263a346d1ed984f2899dbc000f8e56313c6c8be07c1dc1c20b4c9894f17cab

Aliases

arxiv: quant-ph/0006048 · arxiv_version: quant-ph/0006048v1 · doi: 10.48550/arxiv.quant-ph/0006048 · pith_short_12: A4TDUNDND3MY · pith_short_16: A4TDUNDND3MYJ4UJ · pith_short_8: A4TDUNDN

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/A4TDUNDND3MYJ4UJTW6AAD4OKY \
  | 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: 07263a346d1ed984f2899dbc000f8e56313c6c8be07c1dc1c20b4c9894f17cab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e1aef7a5a995056ad508ac14b4bcade806473e564d044a209ee4ae5f2dd55fd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2000-06-09T13:40:04Z",
    "title_canon_sha256": "06fc0a016f428240652bffca16bb64e7943b1bb3ca8816cdecfe13429fca5710"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0006048",
    "kind": "arxiv",
    "version": 1
  }
}