Pith Number

pith:VU6XPZ7U

pith:2009:VU6XPZ7UBZV2LKQOX3UML6XKBQ

not attested not anchored not stored refs pending

On the Salecker-Wigner-Peres clock and double barrier tunneling

Jos\'e T. Lunardi, Luiz A. Manzoni, Marcos Cal\c{c}ada

arxiv:0901.0508 v1 · 2009-01-05 · 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{VU6XPZ7UBZV2LKQOX3UML6XKBQ}

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	2026-05-18T04:32:20.044252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad3d77e7f40e6ba5aa0ebee8c5faea0c2a89abb59f6413995a711d86f2a19b8c

Aliases

arxiv: 0901.0508 · arxiv_version: 0901.0508v1 · doi: 10.48550/arxiv.0901.0508 · pith_short_12: VU6XPZ7UBZV2 · pith_short_16: VU6XPZ7UBZV2LKQO · pith_short_8: VU6XPZ7U

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/VU6XPZ7UBZV2LKQOX3UML6XKBQ \
  | 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: ad3d77e7f40e6ba5aa0ebee8c5faea0c2a89abb59f6413995a711d86f2a19b8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a1bf903f1b7fc5706bbebed7d8e5fe4965b2d34d40707fd6e06174bf79f379e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-01-05T16:19:40Z",
    "title_canon_sha256": "6a09216aa5efea9a84dd9840c9bb517f8b2f1342e247234c5b5bdc74cc183a47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.0508",
    "kind": "arxiv",
    "version": 1
  }
}