Pith Number

pith:A7JJR7KK

pith:2014:A7JJR7KK35OT5A34EZTUMPIGSO

not attested not anchored not stored refs pending

A quantum limit on the information retrievable from an image

Lev B Levitin, Tommaso Toffoli

arxiv:1402.2934 v1 · 2014-02-12 · 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{A7JJR7KK35OT5A34EZTUMPIGSO}

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	2026-05-18T02:59:16.877435Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07d298fd4adf5d3e837c2667463d0693b9aed37c7019d5aae645694dfb7757c3

Aliases

arxiv: 1402.2934 · arxiv_version: 1402.2934v1 · doi: 10.48550/arxiv.1402.2934 · pith_short_12: A7JJR7KK35OT · pith_short_16: A7JJR7KK35OT5A34 · pith_short_8: A7JJR7KK

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/A7JJR7KK35OT5A34EZTUMPIGSO \
  | 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: 07d298fd4adf5d3e837c2667463d0693b9aed37c7019d5aae645694dfb7757c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e77e6c9ee8d889fd82fd2b90155043a0d8554a9536e260a2ebaf289261476fe4",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-02-12T19:09:29Z",
    "title_canon_sha256": "4f73297461a75004a2d8d91707d814d19e9c530cdd161adbdcf05c0cacaa46fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.2934",
    "kind": "arxiv",
    "version": 1
  }
}