Pith Number

pith:3UNMXK7P

pith:2009:3UNMXK7P4OF4GVULFDLMLRT3DB

not attested not anchored not stored refs pending

A Simple "Quantum Interrogation" Method

Partha Ghose

arxiv:0905.2495 v1 · 2009-05-15 · 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{3UNMXK7P4OF4GVULFDLMLRT3DB}

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	2026-05-18T02:27:08.461816Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd1acbabefe38bc3568b28d6c5c67b1875a674a2794de2cf57a029187592a156

Aliases

arxiv: 0905.2495 · arxiv_version: 0905.2495v1 · doi: 10.48550/arxiv.0905.2495 · pith_short_12: 3UNMXK7P4OF4 · pith_short_16: 3UNMXK7P4OF4GVUL · pith_short_8: 3UNMXK7P

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/3UNMXK7P4OF4GVULFDLMLRT3DB \
  | 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: dd1acbabefe38bc3568b28d6c5c67b1875a674a2794de2cf57a029187592a156

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42e2bef6a3568b27222a91d98acb594d3269c02a03026f9e173c1ede18e2cabb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-05-15T13:49:04Z",
    "title_canon_sha256": "4b0e9229c30e1122ed5e61e088f57ef98f3515ab3e123f23b1bfb92bc0f7429f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.2495",
    "kind": "arxiv",
    "version": 1
  }
}