Pith Number

pith:DPGPSUJ5

pith:2025:DPGPSUJ5Y7YJSRVYTXAXLYSZI4

not attested not anchored not stored refs pending

A Privacy-Preserving Indoor Localization System based on Hierarchical Federated Learning

Masood Jan, Wafa Njima, Xun Zhang

arxiv:2507.01581 v1 · 2025-07-02 · cs.LG · cs.CR · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DPGPSUJ5Y7YJSRVYTXAXLYSZI4}

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	2026-07-05T11:30:51.313970Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1bccf9513dc7f09946b89dc175e259471fca766ff261d51c4e107a585f8f888e

Aliases

arxiv: 2507.01581 · arxiv_version: 2507.01581v1 · doi: 10.48550/arxiv.2507.01581 · pith_short_12: DPGPSUJ5Y7YJ · pith_short_16: DPGPSUJ5Y7YJSRVY · pith_short_8: DPGPSUJ5

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/DPGPSUJ5Y7YJSRVYTXAXLYSZI4 \
  | 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: 1bccf9513dc7f09946b89dc175e259471fca766ff261d51c4e107a585f8f888e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef4cb07c5e13deb4457d01756a423571f4cae98635809d45d514b81078beeada",
    "cross_cats_sorted": [
      "cs.CR",
      "eess.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-07-02T10:53:31Z",
    "title_canon_sha256": "524d166b0088f2a52c88175c087f5e98fbcd4dff1d9750748399c21e2f1016bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.01581",
    "kind": "arxiv",
    "version": 1
  }
}