Pith Number

pith:YFJDNWRN

pith:2018:YFJDNWRNPNMO7STKD3NZG42YJO

not attested not anchored not stored refs pending

Approximate Distributed Joins in Apache Spark

Christof Fetzer, Do Le Quoc, Istemi Ekin Akkus, Pramod Bhatotia, Ruichuan Chen, Spyros Blanas, Thorsten Strufe

arxiv:1805.05874 v1 · 2018-05-15 · cs.DC · 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{YFJDNWRNPNMO7STKD3NZG42YJO}

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	2026-05-18T00:15:53.414621Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c15236da2d7b58efca6a1edb9373584bbe57fe0ec9d596fc1466d677992e92bf

Aliases

arxiv: 1805.05874 · arxiv_version: 1805.05874v1 · doi: 10.48550/arxiv.1805.05874 · pith_short_12: YFJDNWRNPNMO · pith_short_16: YFJDNWRNPNMO7STK · pith_short_8: YFJDNWRN

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/YFJDNWRNPNMO7STKD3NZG42YJO \
  | 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: c15236da2d7b58efca6a1edb9373584bbe57fe0ec9d596fc1466d677992e92bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dbbc74561ac8dcc3409d701a2650d5728368281fa7e65cad3adbcd0c226afa0f",
    "cross_cats_sorted": [
      "cs.DB"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2018-05-15T16:07:53Z",
    "title_canon_sha256": "2ba6617cc83d6ab12fad31ec39b91f4a2238cb59dc6472fb7dfa1ef774350cb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.05874",
    "kind": "arxiv",
    "version": 1
  }
}