Pith Number

pith:PJ2NPIIG

pith:2021:PJ2NPIIG7HY5KLTGQKXGHLCOUG

not attested not anchored not stored refs pending

EventAnchor: Reducing Human Interactions in Event Annotation of Racket Sports Videos

Dazhen Deng, Hui Zhang, Jiachen Wang, Jiang Wu, XiaoLong Zhang, Xiao Xie, Yihong Wu, Yingcai Wu, Zheng Zhou

arxiv:2101.04954 v2 · 2021-01-13 · cs.HC · 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{PJ2NPIIG7HY5KLTGQKXGHLCOUG}

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	2026-07-05T02:41:49.714371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a74d7a106f9f1d52e6682ae63ac4ea1a35e1d1225acfc78410b5f3e22e371fc

Aliases

arxiv: 2101.04954 · arxiv_version: 2101.04954v2 · doi: 10.48550/arxiv.2101.04954 · pith_short_12: PJ2NPIIG7HY5 · pith_short_16: PJ2NPIIG7HY5KLTG · pith_short_8: PJ2NPIIG

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/PJ2NPIIG7HY5KLTGQKXGHLCOUG \
  | 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: 7a74d7a106f9f1d52e6682ae63ac4ea1a35e1d1225acfc78410b5f3e22e371fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "581317184094a226d04d541e76d887c06c4724f2b2512f01bdf9fc8ca0e4dd94",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2021-01-13T09:32:05Z",
    "title_canon_sha256": "f7afcaeb9d09a276df75f95ab15be18db27dccd7709955c38cfe469569564cd3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.04954",
    "kind": "arxiv",
    "version": 2
  }
}