Pith Number

pith:3W4UGA7N

pith:2010:3W4UGA7NPFWW4SHOXCB67T35UK

not attested not anchored not stored refs pending

Optimal Exact-Regenerating Codes for Distributed Storage at the MSR and MBR Points via a Product-Matrix Construction

K. V. Rashmi, Nihar B. Shah, P. Vijay Kumar

arxiv:1005.4178 v2 · 2010-05-23 · cs.IT · cs.DC · cs.NI · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3W4UGA7NPFWW4SHOXCB67T35UK}

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	2026-05-18T04:16:53.662571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddb94303ed796d6e48eeb883efcf7da2933cc662f4eb2d742e44bc405c912753

Aliases

arxiv: 1005.4178 · arxiv_version: 1005.4178v2 · doi: 10.48550/arxiv.1005.4178 · pith_short_12: 3W4UGA7NPFWW · pith_short_16: 3W4UGA7NPFWW4SHO · pith_short_8: 3W4UGA7N

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/3W4UGA7NPFWW4SHOXCB67T35UK \
  | 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: ddb94303ed796d6e48eeb883efcf7da2933cc662f4eb2d742e44bc405c912753

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "718db5a467ed8153e5e29306bfba8d8bf91734c30586a6fcc569d13359806bf8",
    "cross_cats_sorted": [
      "cs.DC",
      "cs.NI",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2010-05-23T08:16:03Z",
    "title_canon_sha256": "30f79a944728751b1bc2a74a42c5accbbd89eccc9183756cac9b90fae019c355"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.4178",
    "kind": "arxiv",
    "version": 2
  }
}