Pith Number

pith:QH46AJKE

pith:2021:QH46AJKE2UUMLHBEQVHK6YWR45

not attested not anchored not stored refs pending

Multi-Task Classification of Sewer Pipe Defects and Properties using a Cross-Task Graph Neural Network Decoder

Joakim Bruslund Haurum, Meysam Madadi, Sergio Escalera, Thomas B. Moeslund

arxiv:2111.07846 v1 · 2021-11-15 · 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{QH46AJKE2UUMLHBEQVHK6YWR45}

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	2026-07-05T03:31:44.364396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81f9e02544d528c59c24854eaf62d1e77a91f427a1cd20e191134bd8ad2d5fd7

Aliases

arxiv: 2111.07846 · arxiv_version: 2111.07846v1 · doi: 10.48550/arxiv.2111.07846 · pith_short_12: QH46AJKE2UUM · pith_short_16: QH46AJKE2UUMLHBE · pith_short_8: QH46AJKE

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/QH46AJKE2UUMLHBEQVHK6YWR45 \
  | 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: 81f9e02544d528c59c24854eaf62d1e77a91f427a1cd20e191134bd8ad2d5fd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2eb70f7c298bc730bd2b3abbc556d5cf12acb976d551f23e45a5af25876290c7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-11-15T15:36:50Z",
    "title_canon_sha256": "2617a66f8fe90c227f9ad1a572db375684f2b803251900e9d90346720a146621"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.07846",
    "kind": "arxiv",
    "version": 1
  }
}