Pith Number

pith:OSJC34EX

pith:2011:OSJC34EXKCSWAOSWCDRQSX6WVR

not attested not anchored not stored refs pending

Measuring protein concentration with entangled photons

Alberto Politi, Andrea Crespi, Chris R. Neal, Jeremy L. O'Brien, Jonathan C. F. Matthews, Mirko Lobino, Roberta Ramponi, Roberto Osellame

arxiv:1109.3128 v1 · 2011-09-14 · 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{OSJC34EXKCSWAOSWCDRQSX6WVR}

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	2026-05-18T03:54:15.948774Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74922df09750a5603a5610e3095fd6ac48215739a46f119fe3b39b29ba427481

Aliases

arxiv: 1109.3128 · arxiv_version: 1109.3128v1 · doi: 10.48550/arxiv.1109.3128 · pith_short_12: OSJC34EXKCSW · pith_short_16: OSJC34EXKCSWAOSW · pith_short_8: OSJC34EX

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/OSJC34EXKCSWAOSWCDRQSX6WVR \
  | 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: 74922df09750a5603a5610e3095fd6ac48215739a46f119fe3b39b29ba427481

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80f2eb4c394de479757b77d0c5e3e93e5c06ef33101ae4a250b799762771f683",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-09-14T16:29:06Z",
    "title_canon_sha256": "13902f07e5d5b88bd0b9c98f1a18f7345befab6afd46eb105d11c058d4e01da4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.3128",
    "kind": "arxiv",
    "version": 1
  }
}