Pith Number

pith:2VVPNTC7

pith:2019:2VVPNTC7LYLZFBNIEDBPWNWOBR

not attested not anchored not stored refs pending

2D3D-MatchNet: Learning to Match Keypoints Across 2D Image and 3D Point Cloud

Gim Hee Lee, Marcelo Ang, Mengdan Feng, Sixing Hu

arxiv:1904.09742 v1 · 2019-04-22 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2VVPNTC7LYLZFBNIEDBPWNWOBR}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-17T23:48:03.474872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d56af6cc5f5e179285a820c2fb36ce0c644b9b0647431e07afdc5f05dc355719

Aliases

arxiv: 1904.09742 · arxiv_version: 1904.09742v1 · doi: 10.48550/arxiv.1904.09742 · pith_short_12: 2VVPNTC7LYLZ · pith_short_16: 2VVPNTC7LYLZFBNI · pith_short_8: 2VVPNTC7

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/2VVPNTC7LYLZFBNIEDBPWNWOBR \
  | 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: d56af6cc5f5e179285a820c2fb36ce0c644b9b0647431e07afdc5f05dc355719

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d462a7d1fa01f98a4f08a13c19a803a3788cfa1b718b8ba937dcc756a07d6ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-04-22T06:49:46Z",
    "title_canon_sha256": "6c512875cb1a06ec3dda44e67e0dddf349135321fd6f95b5486cd9bf3c64f82d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09742",
    "kind": "arxiv",
    "version": 1
  }
}