Pith Number

pith:JJFEUFDX

pith:2012:JJFEUFDXJUH5Q2MVLESAYDDGRY

not attested not anchored not stored refs pending

Secure Computation of Top-K Eigenvectors for Shared Matrices in the Cloud

James Powers, Keke Chen

arxiv:1211.3147 v2 · 2012-11-13 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JJFEUFDXJUH5Q2MVLESAYDDGRY}

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	2026-05-18T03:32:47.231578Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a4a4a14774d0fd8699559240c0c668e251f3b5c12892776ad0cf398acadce92

Aliases

arxiv: 1211.3147 · arxiv_version: 1211.3147v2 · doi: 10.48550/arxiv.1211.3147 · pith_short_12: JJFEUFDXJUH5 · pith_short_16: JJFEUFDXJUH5Q2MV · pith_short_8: JJFEUFDX

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/JJFEUFDXJUH5Q2MVLESAYDDGRY \
  | 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: 4a4a4a14774d0fd8699559240c0c668e251f3b5c12892776ad0cf398acadce92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60a70a7d8580a2308095cec2d69bbfb2f3dc76436faa022c4faed83317cf5547",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2012-11-13T21:59:18Z",
    "title_canon_sha256": "57c48ddd80d3c775b19ae5c65896c3d56edc5721c1ea6a426f5a512c9e8ad955"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.3147",
    "kind": "arxiv",
    "version": 2
  }
}