Pith Number

pith:HRORQY6N

pith:2010:HRORQY6NUSH2QQWD3YXSE4XY6D

not attested not anchored not stored refs pending

A Hidden Markov Model for Localization Using Low-End GSM Cell Phones

Mohamed Ibrahim, Moustafa Youssef

arxiv:1010.3411 v1 · 2010-10-17 · cs.NI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HRORQY6NUSH2QQWD3YXSE4XY6D}

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	2026-05-18T04:39:09.190286Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c5d1863cda48fa842c3de2f2272f8f0f1e8d21ee0c85c01b996d2a2a3886644

Aliases

arxiv: 1010.3411 · arxiv_version: 1010.3411v1 · doi: 10.48550/arxiv.1010.3411 · pith_short_12: HRORQY6NUSH2 · pith_short_16: HRORQY6NUSH2QQWD · pith_short_8: HRORQY6N

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/HRORQY6NUSH2QQWD3YXSE4XY6D \
  | 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: 3c5d1863cda48fa842c3de2f2272f8f0f1e8d21ee0c85c01b996d2a2a3886644

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd639697e1e80db498745f85648088c3f3263943590fdd646ec19561bd18afa6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2010-10-17T13:21:06Z",
    "title_canon_sha256": "5fb239bbfe4d0f2c4f09c3c8913bf3431a67a0744c00e14de681c33c774b606e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.3411",
    "kind": "arxiv",
    "version": 1
  }
}