Pith Number

pith:QPB7ZEHT

pith:2015:QPB7ZEHTTYC6MYSOTZCMXSP7D4

not attested not anchored not stored refs pending

Group Event Detection with a Varying Number of Group Members for Video Surveillance

Ming-Ting Sun, Radha Poovendran, Weiyao Lin, Zhengyou Zhang

arxiv:1503.00082 v1 · 2015-02-28 · cs.CV · cs.AI · 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{QPB7ZEHTTYC6MYSOTZCMXSP7D4}

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	2026-05-18T02:25:55.182086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83c3fc90f39e05e6624e9e44cbc9ff1f3229234caf3c89bfc082e57e8a06d781

Aliases

arxiv: 1503.00082 · arxiv_version: 1503.00082v1 · doi: 10.48550/arxiv.1503.00082 · pith_short_12: QPB7ZEHTTYC6 · pith_short_16: QPB7ZEHTTYC6MYSO · pith_short_8: QPB7ZEHT

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/QPB7ZEHTTYC6MYSOTZCMXSP7D4 \
  | 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: 83c3fc90f39e05e6624e9e44cbc9ff1f3229234caf3c89bfc082e57e8a06d781

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45c0b05a632ec4f73873b7446a7012e01812fbd860c6fd2ba073cc2aa374f0b4",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.MM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-02-28T06:51:39Z",
    "title_canon_sha256": "25be21d5edca4cffded2d1f4767023927f1d5f649c78b73418eec947c7eb7fa1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.00082",
    "kind": "arxiv",
    "version": 1
  }
}