Pith Number

pith:7EACM5IW

pith:2022:7EACM5IWNX7D6UP7HHXO6FFRFO

not attested not anchored not stored refs pending

Sparse Optical Flow-Based Line Feature Tracking

Hongshan Yu, Hong Zhang, Islam Ali, Qiang Fu

arxiv:2204.03331 v2 · 2022-04-07 · 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{7EACM5IWNX7D6UP7HHXO6FFRFO}

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	2026-07-05T04:14:52.339086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9002675166dfe3f51ff39eeef14b12bbcfca9b3a61ce361a617b2f599498a0f

Aliases

arxiv: 2204.03331 · arxiv_version: 2204.03331v2 · doi: 10.48550/arxiv.2204.03331 · pith_short_12: 7EACM5IWNX7D · pith_short_16: 7EACM5IWNX7D6UP7 · pith_short_8: 7EACM5IW

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/7EACM5IWNX7D6UP7HHXO6FFRFO \
  | 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: f9002675166dfe3f51ff39eeef14b12bbcfca9b3a61ce361a617b2f599498a0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53dbf457cc77ef7b739ec05d7c5fdb00a4b8cbc0b65c56b849597eac1ddc17cb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2022-04-07T10:00:02Z",
    "title_canon_sha256": "39b5a5ef0cfe2d11170ced3759cdd16304808707ead88a6fed3f966a38742f4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.03331",
    "kind": "arxiv",
    "version": 2
  }
}