Pith Number

pith:RURQVEJC

pith:2012:RURQVEJCCKHVI5IJHC3ZPB3MQC

not attested not anchored not stored refs pending

Investigating macroscopic quantum superpositions and the quantum-to-classical transition by optical parametric amplification

Fabio Sciarrino, Francesco De Martini

arxiv:1202.5518 v1 · 2012-02-24 · 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{RURQVEJCCKHVI5IJHC3ZPB3MQC}

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	2026-05-18T03:16:59.086335Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d230a9122128f54750938b797876c80bd4406efeb4990704bec0b3f15dc62fa

Aliases

arxiv: 1202.5518 · arxiv_version: 1202.5518v1 · doi: 10.48550/arxiv.1202.5518 · pith_short_12: RURQVEJCCKHV · pith_short_16: RURQVEJCCKHVI5IJ · pith_short_8: RURQVEJC

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/RURQVEJCCKHVI5IJHC3ZPB3MQC \
  | 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: 8d230a9122128f54750938b797876c80bd4406efeb4990704bec0b3f15dc62fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e78c6c6e4536833d8b41111fb6b4f0cd8bcb6dd32a006853ae5625b6d240c06",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-02-24T18:16:01Z",
    "title_canon_sha256": "ba97735cdc14dfa81d15a1f88af35c1b3bd421051ba4c3a7e948f0b775c069cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5518",
    "kind": "arxiv",
    "version": 1
  }
}