Pith Number

pith:UM5PX7CP

pith:2021:UM5PX7CPXIQIOMPCSZDJNCBQBB

not attested not anchored not stored refs pending

LOF: Structure-Aware Line Tracking based on Optical Flow

Meixiang Quan, Xiao Liu, Zheng Chai

arxiv:2109.08466 v1 · 2021-09-17 · cs.CV · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UM5PX7CPXIQIOMPCSZDJNCBQBB}

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	2026-07-05T03:15:16.205875Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a33afbfc4fba208731e29646968830087fc548746818c22af4ec89f4e7406e13

Aliases

arxiv: 2109.08466 · arxiv_version: 2109.08466v1 · doi: 10.48550/arxiv.2109.08466 · pith_short_12: UM5PX7CPXIQI · pith_short_16: UM5PX7CPXIQIOMPC · pith_short_8: UM5PX7CP

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/UM5PX7CPXIQIOMPCSZDJNCBQBB \
  | 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: a33afbfc4fba208731e29646968830087fc548746818c22af4ec89f4e7406e13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "967b9b7a2e4aaa30fa11f8057e707754a96a844ffba2bf4f91cffd62b5743b52",
    "cross_cats_sorted": [
      "cs.RO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-09-17T11:09:11Z",
    "title_canon_sha256": "ed9c98fada7c78af3717b22d487a0c4cf4d21f35b0b8967e3d00a61b8a07dab9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.08466",
    "kind": "arxiv",
    "version": 1
  }
}