Pith Number

pith:5JPNJXD2

pith:2025:5JPNJXD2RUKAES3QA67F7227LN

not attested not anchored not stored refs pending

Fisher information from quantum many-particle arrival time measurements

Andreas Ruschhaupt, Jukka Kiukas

arxiv:2505.21214 v1 · 2025-05-27 · quant-ph · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5JPNJXD2RUKAES3QA67F7227LN}

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	2026-07-05T11:10:38.768251Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea5ed4dc7a8d14024b7007be5feb5f5b5bb2b1c2bcf76f6f9c609f9011978b51

Aliases

arxiv: 2505.21214 · arxiv_version: 2505.21214v1 · doi: 10.48550/arxiv.2505.21214 · pith_short_12: 5JPNJXD2RUKA · pith_short_16: 5JPNJXD2RUKAES3Q · pith_short_8: 5JPNJXD2

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/5JPNJXD2RUKAES3QA67F7227LN \
  | 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: ea5ed4dc7a8d14024b7007be5feb5f5b5bb2b1c2bcf76f6f9c609f9011978b51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e03f80765e6c7ebf434deedebf08f5c6f898f3eecb88d35ccaee1e7a35beb432",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-05-27T14:03:42Z",
    "title_canon_sha256": "a609d089ca5e7221c61ca2f43a7943d316abb7e6b7578d211a50dd2038d58c4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.21214",
    "kind": "arxiv",
    "version": 1
  }
}