Pith Number

pith:OPY7ZPLN

pith:2017:OPY7ZPLN4ZNH5CYAABSKKEOA5Q

not attested not anchored not stored refs pending

Interaction-Free Ghost-Imaging of Structured Objects

Alicia Sit, Avshalom C. Elitzur, Ebrahim Karimi, Eliahu Cohen, Fr\'ed\'eric Bouchard, Hugo Larocque, James L. Harden, Robert W. Boyd, Yingwen Zhang

arxiv:1711.09171 v3 · 2017-11-25 · 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{OPY7ZPLN4ZNH5CYAABSKKEOA5Q}

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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.

Cited by

1 paper in Pith

Interaction-free measurement of multiple objects using a universal integrated photonic processor

Receipt and verification

First computed	2026-05-17T23:55:23.142274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73f1fcbd6de65a7e8b000064a511c0ec391069d3f0ec9cff04897e63eae20a7d

Aliases

arxiv: 1711.09171 · arxiv_version: 1711.09171v3 · doi: 10.48550/arxiv.1711.09171 · pith_short_12: OPY7ZPLN4ZNH · pith_short_16: OPY7ZPLN4ZNH5CYA · pith_short_8: OPY7ZPLN

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/OPY7ZPLN4ZNH5CYAABSKKEOA5Q \
  | 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: 73f1fcbd6de65a7e8b000064a511c0ec391069d3f0ec9cff04897e63eae20a7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e5c8fd562e8b83a994ddd7c288d4357b20462407f00695034ce5a4aa73988ad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-11-25T00:04:31Z",
    "title_canon_sha256": "ad5a94e7ba0434dfe26f9b65cb75c49f2e0e6b53a7de9e84c2fedd106182c4e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.09171",
    "kind": "arxiv",
    "version": 3
  }
}