Pith Number

pith:EMRQ7NIB

pith:2013:EMRQ7NIBYIGZQDQST2BZF5MMZS

not attested not anchored not stored refs pending

Repair-Optimal MDS Array Codes over GF(2)

Cyril Guyot, Eyal En Gad, Filip Blagojevic, Robert Mateescu, Zvonimir Bandic

arxiv:1302.4129 v1 · 2013-02-17 · cs.IT · 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{EMRQ7NIBYIGZQDQST2BZF5MMZS}

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	2026-05-18T03:33:24.055430Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23230fb501c20d980e129e8392f58ccca2eed371df9bc02cdacb290cc61c01c6

Aliases

arxiv: 1302.4129 · arxiv_version: 1302.4129v1 · doi: 10.48550/arxiv.1302.4129 · pith_short_12: EMRQ7NIBYIGZ · pith_short_16: EMRQ7NIBYIGZQDQS · pith_short_8: EMRQ7NIB

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/EMRQ7NIBYIGZQDQST2BZF5MMZS \
  | 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: 23230fb501c20d980e129e8392f58ccca2eed371df9bc02cdacb290cc61c01c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0314fbd3ced22804b2e49369067001da51c69abbb356870faed5694d23ca3d42",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-02-17T22:43:20Z",
    "title_canon_sha256": "e1907166b57ae972c467b5012453622f33454e1c729cc0dfeeb35f73bdcc795c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.4129",
    "kind": "arxiv",
    "version": 1
  }
}