Pith Number

pith:OTW7QT6R

pith:2019:OTW7QT6RIOYLRVOC6JGRCKE4OV

not attested not anchored not stored refs pending

Matrix Sketching for Secure Collaborative Machine Learning

Mengjiao Zhang, Shusen Wang

arxiv:1909.11201 v4 · 2019-09-24 · cs.LG · cs.CR · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OTW7QT6RIOYLRVOC6JGRCKE4OV}

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	2026-07-05T02:56:12.116009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74edf84fd143b0b8d5c2f24d11289c7577fde96196ac76d94001aae7378c315b

Aliases

arxiv: 1909.11201 · arxiv_version: 1909.11201v4 · doi: 10.48550/arxiv.1909.11201 · pith_short_12: OTW7QT6RIOYL · pith_short_16: OTW7QT6RIOYLRVOC · pith_short_8: OTW7QT6R

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/OTW7QT6RIOYLRVOC6JGRCKE4OV \
  | 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: 74edf84fd143b0b8d5c2f24d11289c7577fde96196ac76d94001aae7378c315b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2809416e8ed517f8dd5209d52c6359bc82de5662936ed62cbd3b495de3e1fb46",
    "cross_cats_sorted": [
      "cs.CR",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-09-24T21:55:26Z",
    "title_canon_sha256": "ae38c0aee0a5f11a12052dfe4fd620be5ac39b71b6df16555b044e73b8f9c3f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.11201",
    "kind": "arxiv",
    "version": 4
  }
}