Pith Number

pith:P5HFE5OR

pith:1999:P5HFE5ORQY5EMJSYVLKICGF43B

not attested not anchored not stored refs pending

Dual-Resonator Speed Meter for a Free Test Mass

(2) Theoretical Astrophysics, California Institute of Technology), Farid Ya. Khalili (1), Kip S. Thorne (2) ((1) Physics Faculty, Mikhail L. Gorodetsky (1), Moscow State University, Vladimir B. Braginsky (1)

arxiv:gr-qc/9906108 v1 · 1999-06-26 · gr-qc · 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{P5HFE5ORQY5EMJSYVLKICGF43B}

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	2026-07-04T16:13:52.262928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f4e5275d1863a462658aad48118bcd87cd712e1374f4cbf2b378917cfbc2eac

Aliases

arxiv: gr-qc/9906108 · arxiv_version: gr-qc/9906108v1 · doi: 10.48550/arxiv.gr-qc/9906108 · pith_short_12: P5HFE5ORQY5E · pith_short_16: P5HFE5ORQY5EMJSY · pith_short_8: P5HFE5OR

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/P5HFE5ORQY5EMJSYVLKICGF43B \
  | 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: 7f4e5275d1863a462658aad48118bcd87cd712e1374f4cbf2b378917cfbc2eac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b6d7118059301c9efd896d0692efaa55eca8b020452045e897537481343e188",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1999-06-26T02:18:17Z",
    "title_canon_sha256": "b5c8388c6bd6a1f1e6a29e51a9c21db775bc8fbf0d76230d8a9448887792ac33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9906108",
    "kind": "arxiv",
    "version": 1
  }
}