Pith Number

pith:NBJBUXZ4

pith:2017:NBJBUXZ4HND7GSDVFGOLHZNLM7

not attested not anchored not stored refs pending

Automatic Real-time Background Cut for Portrait Videos

Hengshuang Zhao, Jiaya Jia, Ruixing Wang, Xiaoyong Shen

arxiv:1704.08812 v1 · 2017-04-28 · 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{NBJBUXZ4HND7GSDVFGOLHZNLM7}

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	2026-05-18T00:45:25.229159Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68521a5f3c3b47f34875299cb3e5ab67f9afeb45bfb7691c2985538e2ad320ea

Aliases

arxiv: 1704.08812 · arxiv_version: 1704.08812v1 · doi: 10.48550/arxiv.1704.08812 · pith_short_12: NBJBUXZ4HND7 · pith_short_16: NBJBUXZ4HND7GSDV · pith_short_8: NBJBUXZ4

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/NBJBUXZ4HND7GSDVFGOLHZNLM7 \
  | 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: 68521a5f3c3b47f34875299cb3e5ab67f9afeb45bfb7691c2985538e2ad320ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c2e87329e7b414e9954376b39fcab486c3f1fd3c6768e9f7b37a9fef47e863c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2017-04-28T05:29:34Z",
    "title_canon_sha256": "88981bda1bec886f34aac134718e658811a5a9b423b28101312f82ad6491e141"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.08812",
    "kind": "arxiv",
    "version": 1
  }
}