Pith Number

pith:3FB7BQGN

pith:2021:3FB7BQGNPOVSFIPPAIDKVVIA3R

not attested not anchored not stored refs pending

Human Activity Recognition using Deep Learning Models on Smartphones and Smartwatches Sensor Data

Bolu Oluwalade, Judy Wawira, Saptarshi Purkayastha, Sunil Neela, Tobiloba Adejumo

arxiv:2103.03836 v1 · 2021-02-28 · eess.SP · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3FB7BQGNPOVSFIPPAIDKVVIA3R}

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	2026-07-05T02:20:40.268830Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d943f0c0cd7bab22a1ef0206aad500dc688f2f84f1e1bd23971cc3ee6e989617

Aliases

arxiv: 2103.03836 · arxiv_version: 2103.03836v1 · doi: 10.48550/arxiv.2103.03836 · pith_short_12: 3FB7BQGNPOVS · pith_short_16: 3FB7BQGNPOVSFIPP · pith_short_8: 3FB7BQGN

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/3FB7BQGNPOVSFIPPAIDKVVIA3R \
  | 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: d943f0c0cd7bab22a1ef0206aad500dc688f2f84f1e1bd23971cc3ee6e989617

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae59fd1072ad3410be89b35ef066b7cf322ade40d2624ec1a1bf42e9c2699b08",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2021-02-28T06:49:52Z",
    "title_canon_sha256": "57f37eb3e9b4963a9690db49c0fb946fd905bc24398f7bf220df40951fa8c59b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.03836",
    "kind": "arxiv",
    "version": 1
  }
}