Pith Number

pith:OJUU34L6

pith:1999:OJUU34L6ZXB7ZRGRTQ67QWKSW4

not attested not anchored not stored refs pending

On Wigner's clock and the detectability of spacetime foam with gravitational-wave interferometers

H. van Dam (University of North Carolina), Y. J. Ng (MIT & University of North Carolina)

arxiv:gr-qc/9911054 v2 · 1999-11-15 · gr-qc · astro-ph · hep-th · 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{OJUU34L6ZXB7ZRGRTQ67QWKSW4}

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.

Cited by

1 paper in Pith

Salecker-Wigner-Karolyhazy Gedankenexperiment in light of the self-gravity

Receipt and verification

First computed	2026-07-04T16:13:55.773981Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72694df17ecdc3fcc4d19c3df85952b736f22bc057c15770338188aa586d2e2b

Aliases

arxiv: gr-qc/9911054 · arxiv_version: gr-qc/9911054v2 · doi: 10.48550/arxiv.gr-qc/9911054 · pith_short_12: OJUU34L6ZXB7 · pith_short_16: OJUU34L6ZXB7ZRGR · pith_short_8: OJUU34L6

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/OJUU34L6ZXB7ZRGRTQ67QWKSW4 \
  | 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: 72694df17ecdc3fcc4d19c3df85952b736f22bc057c15770338188aa586d2e2b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f8f624766138f50255114d5da4a9d9f98e9f149ff3e9144fcd9f9cbdbab70c9",
    "cross_cats_sorted": [
      "astro-ph",
      "hep-th",
      "quant-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1999-11-15T17:28:18Z",
    "title_canon_sha256": "bbf98c29f664beb78558903631651c3e870ec25c73aa9f8552b2c9d8aa18b3e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9911054",
    "kind": "arxiv",
    "version": 2
  }
}