Pith Number

pith:RYW2WU7A

pith:2015:RYW2WU7AZMV5UTVXSLAO3CF3V2

not attested not anchored not stored refs pending

30 years of squeezed light generation

Christoph Marquardt, Gerd Leuchs, Tobias Gehring, Ulrik L. Andersen

arxiv:1511.03250 v3 · 2015-11-10 · 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{RYW2WU7AZMV5UTVXSLAO3CF3V2}

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	2026-05-18T01:17:11.503761Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e2dab53e0cb2bda4eb792c0ed88bbaeb4ecc4b48417443719158246cad9c08a

Aliases

arxiv: 1511.03250 · arxiv_version: 1511.03250v3 · doi: 10.48550/arxiv.1511.03250 · pith_short_12: RYW2WU7AZMV5 · pith_short_16: RYW2WU7AZMV5UTVX · pith_short_8: RYW2WU7A

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/RYW2WU7AZMV5UTVXSLAO3CF3V2 \
  | 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: 8e2dab53e0cb2bda4eb792c0ed88bbaeb4ecc4b48417443719158246cad9c08a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f10dcc1ee4e0b6cec3e20e7bd50f02685ee929e01e3be482fe8d8f538836a74",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-11-10T20:14:05Z",
    "title_canon_sha256": "bc29cde929c31fb3ea7ad82fd35e18b4779ad333d01faf80210f264a25cf8a0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.03250",
    "kind": "arxiv",
    "version": 3
  }
}