Pith Number

pith:ND727YXR

pith:2021:ND727YXRJHQ6P4BZVAZ3TOD7P6

not attested not anchored not stored refs pending

Direct Measure Matching for Crowd Counting

Hui Lin, Xiaopeng Hong, Xing Wei, Yaowei Wang, Yihong Gong, Yunfeng Qiu, Zhiheng Ma

arxiv:2107.01558 v1 · 2021-07-04 · 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{ND727YXRJHQ6P4BZVAZ3TOD7P6}

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	2026-07-05T02:54:58.326090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68ffafe2f149e1e7f039a833b9b87f7f881b3ad26ae822cb781850a12bed5d76

Aliases

arxiv: 2107.01558 · arxiv_version: 2107.01558v1 · doi: 10.48550/arxiv.2107.01558 · pith_short_12: ND727YXRJHQ6 · pith_short_16: ND727YXRJHQ6P4BZ · pith_short_8: ND727YXR

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/ND727YXRJHQ6P4BZVAZ3TOD7P6 \
  | 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: 68ffafe2f149e1e7f039a833b9b87f7f881b3ad26ae822cb781850a12bed5d76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e958afda0848e0eb6d70de35dbf2fa95f9ad75bf501b397d6adb36f106913baf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-07-04T06:37:33Z",
    "title_canon_sha256": "252fe23d1d0453c7d80bfe3e61e631ee7f2959733b2969080cb10102512cc50d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.01558",
    "kind": "arxiv",
    "version": 1
  }
}