Pith Number

pith:XYPOVHD2

pith:2007:XYPOVHD25ZZWVIKIHXHUTZN2OQ

not attested not anchored not stored refs pending

Recycling of quantum information: Multiple observations of quantum systems

Emilio Bagan, John Calsamiglia, Peter Rapcan, Ramon Munoz-Tapia, Vladimir Buzek

arxiv:0708.1086 v1 · 2007-08-08 · 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{XYPOVHD25ZZWVIKIHXHUTZN2OQ}

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	2026-05-18T02:16:28.874050Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be1eea9c7aee736aa1483dcf49e5ba742290d7691203928ec4c13c54f11eb85c

Aliases

arxiv: 0708.1086 · arxiv_version: 0708.1086v1 · doi: 10.48550/arxiv.0708.1086 · pith_short_12: XYPOVHD25ZZW · pith_short_16: XYPOVHD25ZZWVIKI · pith_short_8: XYPOVHD2

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/XYPOVHD25ZZWVIKIHXHUTZN2OQ \
  | 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: be1eea9c7aee736aa1483dcf49e5ba742290d7691203928ec4c13c54f11eb85c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c20179f67cf00293fc33c16e9fb9de9ffa3f84b97f46681d31a35a9061c53b7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2007-08-08T12:11:59Z",
    "title_canon_sha256": "204437381954ba320de606bede436507b4fea4b8da97190dce2321bc12630efa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.1086",
    "kind": "arxiv",
    "version": 1
  }
}