Pith Number

pith:3QL4QQOS

pith:2020:3QL4QQOSXOHH7EF5T2EUJVGLW3

not attested not anchored not stored refs pending

Fast and Reliable WiFi Fingerprint Collection for Indoor Localization

Fuqiang Gu, Jianga Shang, Kourosh Khoshelham, Milad Ramezani, Ruiqin Zhou, Xiaoping Zheng

arxiv:2009.03743 v1 · 2020-08-01 · cs.NI · cs.RO · 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{3QL4QQOSXOHH7EF5T2EUJVGLW3}

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	2026-07-05T01:33:50.380202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc17c841d2bb8e7f90bd9e8944d4cbb6d0ae6b5ca2e28a545594bcc2590a1b47

Aliases

arxiv: 2009.03743 · arxiv_version: 2009.03743v1 · doi: 10.48550/arxiv.2009.03743 · pith_short_12: 3QL4QQOSXOHH · pith_short_16: 3QL4QQOSXOHH7EF5 · pith_short_8: 3QL4QQOS

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/3QL4QQOSXOHH7EF5T2EUJVGLW3 \
  | 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: dc17c841d2bb8e7f90bd9e8944d4cbb6d0ae6b5ca2e28a545594bcc2590a1b47

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0b4de1bf73a082d85a9e3b86fecc42ef220c165fc138ebc23332fe54e0e79bc",
    "cross_cats_sorted": [
      "cs.RO",
      "eess.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2020-08-01T03:51:58Z",
    "title_canon_sha256": "2d561b2c0c2d76b6a7bb097130b1b1d1159147b005e0f052cefdb3bf80fe42d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.03743",
    "kind": "arxiv",
    "version": 1
  }
}