Pith Number

pith:M6D5IPRT

pith:2012:M6D5IPRTIKRVQQBLYDPJGHDWEL

not attested not anchored not stored refs pending

Entanglement Between Photons that have Never Coexisted

A. Halevy, E. Megidish, H. S. Eisenberg, L. Dovrat, T. Dvir, T. Shacham

arxiv:1209.4191 v1 · 2012-09-19 · 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{M6D5IPRTIKRVQQBLYDPJGHDWEL}

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	2026-05-18T03:00:26.883010Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6787d43e3342a358402bc0de931c7622ea38f18eb9c171d69d628563ebd10e7f

Aliases

arxiv: 1209.4191 · arxiv_version: 1209.4191v1 · doi: 10.48550/arxiv.1209.4191 · pith_short_12: M6D5IPRTIKRV · pith_short_16: M6D5IPRTIKRVQQBL · pith_short_8: M6D5IPRT

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/M6D5IPRTIKRVQQBLYDPJGHDWEL \
  | 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: 6787d43e3342a358402bc0de931c7622ea38f18eb9c171d69d628563ebd10e7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2d0bff2b99d1d91edb37486456db7eaa1dd305dc193340dc51ab5875238a082",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-09-19T09:25:45Z",
    "title_canon_sha256": "9d6053a5f3b271bcdcc263047313f5d8d72f132d4e19b1b1e3ea6e87bd23b626"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.4191",
    "kind": "arxiv",
    "version": 1
  }
}