Pith Number

pith:2IPXBUPY

pith:2012:2IPXBUPYHXT2PM4YBY3YZSBF3L

not attested not anchored not stored refs pending

EPR-based ghost imaging using a single-photon-sensitive camera

Daniel S. Tasca, Miles J. Padgett, Reuben S. Aspden, Robert W. Boyd

arxiv:1212.5059 v2 · 2012-12-20 · quant-ph · physics.optics

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2IPXBUPYHXT2PM4YBY3YZSBF3L}

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	2026-05-18T03:16:49.573126Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d21f70d1f83de7a7b3980e378cc825dac5472a4287a81a2fb4e79ac290e6f191

Aliases

arxiv: 1212.5059 · arxiv_version: 1212.5059v2 · doi: 10.48550/arxiv.1212.5059 · pith_short_12: 2IPXBUPYHXT2 · pith_short_16: 2IPXBUPYHXT2PM4Y · pith_short_8: 2IPXBUPY

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/2IPXBUPYHXT2PM4YBY3YZSBF3L \
  | 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: d21f70d1f83de7a7b3980e378cc825dac5472a4287a81a2fb4e79ac290e6f191

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce659d89f41e247de8ca6382714e5566aff9b990cd97fbfdc41cd853e853c806",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-12-20T14:40:27Z",
    "title_canon_sha256": "11ec4eb0e86f7983c2f020ef252ccbd4d488062eed135c1690c078ac4820e6cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.5059",
    "kind": "arxiv",
    "version": 2
  }
}