Pith Number

pith:FNA76B3K

pith:2020:FNA76B3KPBH4MDFCFFQSAU2CLD

not attested not anchored not stored refs pending

Counting Out Time: Class Agnostic Video Repetition Counting in the Wild

Andrew Zisserman, Debidatta Dwibedi, Jonathan Tompson, Pierre Sermanet, Yusuf Aytar

arxiv:2006.15418 v1 · 2020-06-27 · 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{FNA76B3KPBH4MDFCFFQSAU2CLD}

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	2026-07-05T01:14:05.319707Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b41ff076a784fc60ca2296120534258faf558a4aad344991cfdd8bf56c4917c

Aliases

arxiv: 2006.15418 · arxiv_version: 2006.15418v1 · doi: 10.48550/arxiv.2006.15418 · pith_short_12: FNA76B3KPBH4 · pith_short_16: FNA76B3KPBH4MDFC · pith_short_8: FNA76B3K

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/FNA76B3KPBH4MDFCFFQSAU2CLD \
  | 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: 2b41ff076a784fc60ca2296120534258faf558a4aad344991cfdd8bf56c4917c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "728c7c1f8a1da35181b3981d447210522e35c237ecc5e2cee7402800e1896e29",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-06-27T18:00:42Z",
    "title_canon_sha256": "23840e4e4a5e938b5e41ba673e5087085f5d322ed91f5c0132779ab825c53433"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.15418",
    "kind": "arxiv",
    "version": 1
  }
}