Pith Number

pith:XQQ7RGZ5

pith:2015:XQQ7RGZ55PYYLSXCAWMPFUQOAY

not attested not anchored not stored refs pending

Video Primal Sketch: A Unified Middle-Level Representation for Video

Song-Chun Zhu, Zhi Han, Zongben Xu

arxiv:1502.02965 v1 · 2015-02-10 · 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{XQQ7RGZ55PYYLSXCAWMPFUQOAY}

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	2026-05-18T02:27:30.186496Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc21f89b3debf185cae20598f2d20e063e0a6b6cd616dcf4eccfc06569c79cc4

Aliases

arxiv: 1502.02965 · arxiv_version: 1502.02965v1 · doi: 10.48550/arxiv.1502.02965 · pith_short_12: XQQ7RGZ55PYY · pith_short_16: XQQ7RGZ55PYYLSXC · pith_short_8: XQQ7RGZ5

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/XQQ7RGZ55PYYLSXCAWMPFUQOAY \
  | 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: bc21f89b3debf185cae20598f2d20e063e0a6b6cd616dcf4eccfc06569c79cc4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a47f9b524c16708bab8c4a5ebf674d447c0ee375eed91115a9643a454d7447d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-02-10T16:13:01Z",
    "title_canon_sha256": "bc5268c02d89554b693bd099d68ee3a8ac102718bc004b80fce8bb9c3f04272c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.02965",
    "kind": "arxiv",
    "version": 1
  }
}