Pith Number

pith:BPIPINGK

pith:2007:BPIPINGKNWU65JNPG7JVXYXTB7

not attested not anchored not stored refs pending

Observation of squeezed light with 10dB quantum noise reduction

Alexander Franzen, Boris Hage, Henning Vahlbruch, Karsten Danzmann, Moritz Mehmet, Nico Lastzka, Roman Schnabel, Simon Chelkowski, Stefan Gossler

arxiv:0706.1431 v1 · 2007-06-11 · 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{BPIPINGKNWU65JNPG7JVXYXTB7}

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	2026-07-04T15:07:00.400722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0bd0f434ca6da9eea5af37d35be2f30fe364983ceba0465cbc56e16622e4730e

Aliases

arxiv: 0706.1431 · arxiv_version: 0706.1431v1 · doi: 10.48550/arxiv.0706.1431 · pith_short_12: BPIPINGKNWU6 · pith_short_16: BPIPINGKNWU65JNP · pith_short_8: BPIPINGK

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/BPIPINGKNWU65JNPG7JVXYXTB7 \
  | 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: 0bd0f434ca6da9eea5af37d35be2f30fe364983ceba0465cbc56e16622e4730e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb4ad97908dd4648116097b71272cf6cdd9232ce8454ad1e8a5b7a543bb81d0c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2007-06-11T10:15:11Z",
    "title_canon_sha256": "0a98e26787c2e0d21e62ef8a8eb27fd55170f68d0b9dfe4b97a047a009822ff5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0706.1431",
    "kind": "arxiv",
    "version": 1
  }
}