Pith Number

pith:K4Q6P5F6

pith:2012:K4Q6P5F6YR5QXOLQKVFC2OQPZD

not attested not anchored not stored refs pending

Decision at the beam-splitter, or decision at detection, that is the question

Antoine Suarez

arxiv:1204.5848 v2 · 2012-04-26 · quant-ph · physics.hist-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{K4Q6P5F6YR5QXOLQKVFC2OQPZD}

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	2026-05-18T03:28:06.180190Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5721e7f4bec47b0bb970554a2d3a0fc8ca4000bf60b0d2b935d795a6f5e6db48

Aliases

arxiv: 1204.5848 · arxiv_version: 1204.5848v2 · doi: 10.48550/arxiv.1204.5848 · pith_short_12: K4Q6P5F6YR5Q · pith_short_16: K4Q6P5F6YR5QXOLQ · pith_short_8: K4Q6P5F6

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/K4Q6P5F6YR5QXOLQKVFC2OQPZD \
  | 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: 5721e7f4bec47b0bb970554a2d3a0fc8ca4000bf60b0d2b935d795a6f5e6db48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b90e173425fb4cdab3573a89ec77fa6c698c6d6bcbaa0e86c89f117bf2e789ee",
    "cross_cats_sorted": [
      "physics.hist-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-04-26T07:22:01Z",
    "title_canon_sha256": "4bd7f28156ad86e3d0c74a18fe73abb9fc11708025b4bd98756a6d9aa3ecaf6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5848",
    "kind": "arxiv",
    "version": 2
  }
}