Pith Number

pith:NKA34BED

pith:2025:NKA34BEDQSLGABCHVDPKQTGTFW

not attested not anchored not stored refs pending

WatchHAR: Real-time On-device Human Activity Recognition System for Smartwatches

Henry Hoffmann, Karan Ahuja, Taeyoung Yeon, Vasco Xu

arxiv:2509.04736 v1 · 2025-09-05 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NKA34BEDQSLGABCHVDPKQTGTFW}

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	2026-07-05T12:05:28.676241Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a81be04838496600447a8dea84cd32dbd2154f5339a2b69fe4d6e3662cd68b0

Aliases

arxiv: 2509.04736 · arxiv_version: 2509.04736v1 · doi: 10.48550/arxiv.2509.04736 · pith_short_12: NKA34BEDQSLG · pith_short_16: NKA34BEDQSLGABCH · pith_short_8: NKA34BED

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/NKA34BEDQSLGABCHVDPKQTGTFW \
  | 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: 6a81be04838496600447a8dea84cd32dbd2154f5339a2b69fe4d6e3662cd68b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d95ce015aaeb3c47def4cd0a599a20bdac21f41b8e6a4393afa9cab3e61e68cb",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2025-09-05T01:30:16Z",
    "title_canon_sha256": "3c6888051925811ba0b8810cae99b2a304c435a0e0d674d94ea9203a05cf1323"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.04736",
    "kind": "arxiv",
    "version": 1
  }
}