Pith Number

pith:IJGPV3JR

pith:2010:IJGPV3JRC44MZITFTZE3LGFKVE

not attested not anchored not stored refs pending

Quantum imaging: Scattered observations on "Copenhagen"

Adrian Kent

arxiv:1001.1996 v1 · 2010-01-12 · physics.pop-ph · physics.soc-ph · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IJGPV3JRC44MZITFTZE3LGFKVE}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T04:41:36.727537Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

424cfaed311738cca2659e49b598aaa90ee35935fe9da98bf4650d62b3ff04b6

Aliases

arxiv: 1001.1996 · arxiv_version: 1001.1996v1 · doi: 10.48550/arxiv.1001.1996 · pith_short_12: IJGPV3JRC44M · pith_short_16: IJGPV3JRC44MZITF · pith_short_8: IJGPV3JR

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/IJGPV3JRC44MZITFTZE3LGFKVE \
  | 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: 424cfaed311738cca2659e49b598aaa90ee35935fe9da98bf4650d62b3ff04b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "faaed4387b084d4ecc44a5a8d062530aaa76f1ef5d0ca96906649568a59c4808",
    "cross_cats_sorted": [
      "physics.soc-ph",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2010-01-12T16:09:43Z",
    "title_canon_sha256": "2b930a2c57e776368eac68a8f555836879c9160b6b4528c86e5a3bd7991f96c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.1996",
    "kind": "arxiv",
    "version": 1
  }
}