Pith Number

pith:QDQ3UJJX

pith:2018:QDQ3UJJXMGML5WTIRCBTNSPYP3

not attested not anchored not stored refs pending

Parallel Computation of PDFs on Big Spatial Data Using Spark

Esther Pacitti, Fabio Porto, Ji Liu, Noel Moreno Lemus, Patrick Valduriez

arxiv:1805.03141 v1 · 2018-05-08 · cs.DC · cs.AI · cs.DB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QDQ3UJJXMGML5WTIRCBTNSPYP3}

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	2026-05-18T00:16:34.492013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80e1ba25376198beda68888336c9f87ed66af42d553cc01bca6f048fe17493f0

Aliases

arxiv: 1805.03141 · arxiv_version: 1805.03141v1 · doi: 10.48550/arxiv.1805.03141 · pith_short_12: QDQ3UJJXMGML · pith_short_16: QDQ3UJJXMGML5WTI · pith_short_8: QDQ3UJJX

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/QDQ3UJJXMGML5WTIRCBTNSPYP3 \
  | 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: 80e1ba25376198beda68888336c9f87ed66af42d553cc01bca6f048fe17493f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae642c8ced5b4e4c5e36a5ef6b4029adc59e9d6ef9cb2472c6cf6192381e5591",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.DB"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2018-05-08T16:22:25Z",
    "title_canon_sha256": "de34476c2063501a93a8e3b21ed79f65fdcfe5a3ad50d4370e8f267219562f84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.03141",
    "kind": "arxiv",
    "version": 1
  }
}