Pith Number

pith:2B4HM4CZ

pith:2018:2B4HM4CZU6VJG5GUIJYYPUMFW3

not attested not anchored not stored refs pending

SPIN: A Fast and Scalable Matrix Inversion Method in Apache Spark

Chandan Misra, Soumya K. Ghosh, Sourangshu Bhattacharya

arxiv:1801.04723 v1 · 2018-01-15 · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2B4HM4CZU6VJG5GUIJYYPUMFW3}

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	2026-05-18T00:26:03.463618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d078767059a7aa9374d4427187d185b6fe5b409e0d58e3de26f056ee3d1fb77e

Aliases

arxiv: 1801.04723 · arxiv_version: 1801.04723v1 · doi: 10.48550/arxiv.1801.04723 · pith_short_12: 2B4HM4CZU6VJ · pith_short_16: 2B4HM4CZU6VJG5GU · pith_short_8: 2B4HM4CZ

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/2B4HM4CZU6VJG5GUIJYYPUMFW3 \
  | 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: d078767059a7aa9374d4427187d185b6fe5b409e0d58e3de26f056ee3d1fb77e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1c6d18ab87d74f5dfd1b52dd3098e95c67df6adf050d470db326e364479a796",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2018-01-15T10:28:09Z",
    "title_canon_sha256": "012af1a2eebfe22d8cca435295f2bbba803b25e404fdbf262ff449a06f4e18f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.04723",
    "kind": "arxiv",
    "version": 1
  }
}