Pith Number

pith:VFPAPCYA

pith:2025:VFPAPCYACF2IBH7SV6OWVISSAW

not attested not anchored not stored refs pending

A Real-Time, Vision-Based System for Badminton Smash Speed Estimation on Mobile Devices

Diwen Huang

arxiv:2509.05334 v1 · 2025-09-01 · cs.CV · cs.MM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VFPAPCYACF2IBH7SV6OWVISSAW}

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	2026-07-05T12:05:45.162701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a95e078b001174809ff2af9d6aa252058616d158a13923eb6672b0b1a3d9838e

Aliases

arxiv: 2509.05334 · arxiv_version: 2509.05334v1 · doi: 10.48550/arxiv.2509.05334 · pith_short_12: VFPAPCYACF2I · pith_short_16: VFPAPCYACF2IBH7S · pith_short_8: VFPAPCYA

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/VFPAPCYACF2IBH7SV6OWVISSAW \
  | 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: a95e078b001174809ff2af9d6aa252058616d158a13923eb6672b0b1a3d9838e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "389f7ace30c7c59c91f43816a68b9ebf57e7e836a169c9f36e5f03b426cb099e",
    "cross_cats_sorted": [
      "cs.MM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2025-09-01T06:09:19Z",
    "title_canon_sha256": "01d07de607bbc7a076b866cee88938dfcf373b4f35f1dc1c05557c08045a8fb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.05334",
    "kind": "arxiv",
    "version": 1
  }
}