Pith Number

pith:3IAZ4WRQ

pith:2021:3IAZ4WRQP3SDTKZGH7TNWFSHND

not attested not anchored not stored refs pending

Long-Range Feature Propagating for Natural Image Matting

Bineng Zhong, Haozhe Xie, Qinglin Liu, Rongrong Ji, Shengping Zhang

arxiv:2109.12252 v1 · 2021-09-25 · cs.CV · cs.LG · cs.MM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3IAZ4WRQP3SDTKZGH7TNWFSHND}

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	2026-07-05T07:49:57.962942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da019e5a307ee439ab263fe6db164768cff9def9915630bb208dc8bc45024013

Aliases

arxiv: 2109.12252 · arxiv_version: 2109.12252v1 · doi: 10.48550/arxiv.2109.12252 · pith_short_12: 3IAZ4WRQP3SD · pith_short_16: 3IAZ4WRQP3SDTKZG · pith_short_8: 3IAZ4WRQ

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/3IAZ4WRQP3SDTKZGH7TNWFSHND \
  | 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: da019e5a307ee439ab263fe6db164768cff9def9915630bb208dc8bc45024013

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33cdfab16a8528ca05beaa02049053b51032cfdea23f92d36135e138039ff404",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.MM"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-09-25T01:17:17Z",
    "title_canon_sha256": "abadd72b256420b35728e0daa4fcf6290bf91f0000f46dff936d23f4bbe556f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.12252",
    "kind": "arxiv",
    "version": 1
  }
}