Pith Number

pith:4C6FCIUN

pith:2021:4C6FCIUNSZ6T2CDZ3DYZ3GOSFL

not attested not anchored not stored refs pending

LoFTR: Detector-Free Local Feature Matching with Transformers

Hujun Bao, Jiaming Sun, Xiaowei Zhou, Yuang Wang, Zehong Shen

arxiv:2104.00680 v1 · 2021-04-01 · 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{4C6FCIUNSZ6T2CDZ3DYZ3GOSFL}

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.

Cited by

1 paper in Pith

Efficient 3D Content Reconstruction and Generation

Receipt and verification

First computed	2026-07-05T02:28:30.387379Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0bc51228d967d3d0879d8f19d99d22ad78911a8c9ee1eaef7dcd314e487bb7b

Aliases

arxiv: 2104.00680 · arxiv_version: 2104.00680v1 · doi: 10.48550/arxiv.2104.00680 · pith_short_12: 4C6FCIUNSZ6T · pith_short_16: 4C6FCIUNSZ6T2CDZ · pith_short_8: 4C6FCIUN

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/4C6FCIUNSZ6T2CDZ3DYZ3GOSFL \
  | 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: e0bc51228d967d3d0879d8f19d99d22ad78911a8c9ee1eaef7dcd314e487bb7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2eabb246d00fed8b9c1980c0cfad7a9ff1a91a5246b5945b9f8592f9bd7db1e6",
    "cross_cats_sorted": [
      "cs.RO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-04-01T17:59:42Z",
    "title_canon_sha256": "a0046f28331ad2dfcc09b5ac50ee8d6a8260e3ba1df6e61883e785161c7479de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.00680",
    "kind": "arxiv",
    "version": 1
  }
}