Pith Number

pith:W4RVLCW3

pith:2009:W4RVLCW3YM2HGWNDV7UVMQB2WU

not attested not anchored not stored refs pending

Frequency Bin Entangled Photons

A.T. Nguyen, J. Cussey, J.-M. Merolla, K. Phan Huy, L. Olislager, Ph. Emplit, S. Massar

arxiv:0910.1325 v2 · 2009-10-07 · 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{W4RVLCW3YM2HGWNDV7UVMQB2WU}

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	2026-05-18T02:11:25.732449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b723558adbc3347359a3afe956403ab53bcaf729215d058f997bda8b1d19da5a

Aliases

arxiv: 0910.1325 · arxiv_version: 0910.1325v2 · doi: 10.48550/arxiv.0910.1325 · pith_short_12: W4RVLCW3YM2H · pith_short_16: W4RVLCW3YM2HGWND · pith_short_8: W4RVLCW3

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/W4RVLCW3YM2HGWNDV7UVMQB2WU \
  | 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: b723558adbc3347359a3afe956403ab53bcaf729215d058f997bda8b1d19da5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d269e0cf63c856b461b0ba01ab6f3492b8c4c17751b4e64aa716c0d51dec0d72",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-10-07T17:39:06Z",
    "title_canon_sha256": "23a6896ad75490ec199d22492026400dd7209faf26125772da50741b3f3b00b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.1325",
    "kind": "arxiv",
    "version": 2
  }
}