Pith Number

pith:RY74FXFS

pith:2009:RY74FXFSM5NVNKZLE6KIKFO6O2

not attested not anchored not stored refs pending

Quantum phase estimation with lossy interferometers

B. J. Smith, I. A. Walmsley, J. S. Lundeen, K. Banaszek, R. Demkowicz-Dobrzanski, U. Dorner, W. Wasilewski

arxiv:0904.0456 v2 · 2009-04-02 · 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{RY74FXFSM5NVNKZLE6KIKFO6O2}

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	2026-05-18T04:03:19.650026Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e3fc2dcb2675b56ab2b27948515de769db8170f2d15a8d6eed89b53a8e841cc

Aliases

arxiv: 0904.0456 · arxiv_version: 0904.0456v2 · doi: 10.48550/arxiv.0904.0456 · pith_short_12: RY74FXFSM5NV · pith_short_16: RY74FXFSM5NVNKZL · pith_short_8: RY74FXFS

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/RY74FXFSM5NVNKZLE6KIKFO6O2 \
  | 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: 8e3fc2dcb2675b56ab2b27948515de769db8170f2d15a8d6eed89b53a8e841cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87626d1b6f6b8651115af5a9ae6ab66599b9f22ce5c053e510757d1581fbb31e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-04-02T20:07:18Z",
    "title_canon_sha256": "2ea1c850761b592fc1a10c1c8a6bd6b1166df376b0d59707f91c4b5859f0aad3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0456",
    "kind": "arxiv",
    "version": 2
  }
}