Pith Number

pith:U5UGT3LT

pith:2025:U5UGT3LTZCMB5MVLK2SHIBRSC6

not attested not anchored not stored refs pending

Point Cloud Objective Quality: Benchmarking Features and Quality Evaluation

Antonio M. G. Pinheiro, Joao Prazeres, Manuela Pereira, Rafael Rodrigues

arxiv:2504.03381 v1 · 2025-04-04 · eess.IV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U5UGT3LTZCMB5MVLK2SHIBRSC6}

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	2026-07-05T10:44:31.193306Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a76869ed73c8981eb2ab56a4740632178ba0c8b157e4915766e9d559e28fc424

Aliases

arxiv: 2504.03381 · arxiv_version: 2504.03381v1 · doi: 10.48550/arxiv.2504.03381 · pith_short_12: U5UGT3LTZCMB · pith_short_16: U5UGT3LTZCMB5MVL · pith_short_8: U5UGT3LT

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/U5UGT3LTZCMB5MVLK2SHIBRSC6 \
  | 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: a76869ed73c8981eb2ab56a4740632178ba0c8b157e4915766e9d559e28fc424

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2dfeee2b8703f7c84bc0d05410b4376b57024acc42e8e729230bc234d14c303c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2025-04-04T11:52:48Z",
    "title_canon_sha256": "72edff05925da33a5aece0325a271bd773ed9ea9424ef9c13475077991ba35a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.03381",
    "kind": "arxiv",
    "version": 1
  }
}