Pith Number

pith:2QB3R3MG

pith:2019:2QB3R3MG3XYHULSGGIKJ6C2BTH

not attested not anchored not stored refs pending

Learning to Optimally Segment Point Clouds

David Held, Deva Ramanan, Peiyun Hu

arxiv:1912.04976 v1 · 2019-12-10 · cs.RO · 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{2QB3R3MG3XYHULSGGIKJ6C2BTH}

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	2026-07-05T00:25:30.568835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d403b8ed86ddf07a2e4632149f0b4199fdb49f121d3ca783bb445b63d8f53199

Aliases

arxiv: 1912.04976 · arxiv_version: 1912.04976v1 · doi: 10.48550/arxiv.1912.04976 · pith_short_12: 2QB3R3MG3XYH · pith_short_16: 2QB3R3MG3XYHULSG · pith_short_8: 2QB3R3MG

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/2QB3R3MG3XYHULSGGIKJ6C2BTH \
  | 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: d403b8ed86ddf07a2e4632149f0b4199fdb49f121d3ca783bb445b63d8f53199

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21d25638933756dfe7d00cc655d8410ed67bdc5b355ae1336e7716ac79bb0838",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2019-12-10T20:53:18Z",
    "title_canon_sha256": "ee145153bfe4fa98ef6c3648c1835376bedc1539f1abf8bfdc7d5fe7fe847fda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.04976",
    "kind": "arxiv",
    "version": 1
  }
}