Pith Number

pith:ZMEHZLGJ

pith:2019:ZMEHZLGJMY63NKNQFSGL7RYYTD

not attested not anchored not stored refs pending

Indoor positioning system using WLAN channel estimates as fingerprints for mobile devices

David Akopian, Erick Schmidt

arxiv:1907.00478 v1 · 2019-06-30 · cs.NI · 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{ZMEHZLGJMY63NKNQFSGL7RYYTD}

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	2026-05-17T23:41:51.547982Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb087cacc9663db6a9b02c8cbfc71898c690cf45b94b3a241d0a3f2a0a39d630

Aliases

arxiv: 1907.00478 · arxiv_version: 1907.00478v1 · doi: 10.48550/arxiv.1907.00478 · pith_short_12: ZMEHZLGJMY63 · pith_short_16: ZMEHZLGJMY63NKNQ · pith_short_8: ZMEHZLGJ

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/ZMEHZLGJMY63NKNQFSGL7RYYTD \
  | 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: cb087cacc9663db6a9b02c8cbfc71898c690cf45b94b3a241d0a3f2a0a39d630

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1f5f3b9d640766e8bc94a1ea8ae4fc652e5c47a78d8c97e50a28e5c58638684",
    "cross_cats_sorted": [
      "eess.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2019-06-30T21:52:34Z",
    "title_canon_sha256": "183b7bb177e7d30e8e4c09d1491721e8b0849675478e07f1b012d1215732928c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.00478",
    "kind": "arxiv",
    "version": 1
  }
}