Pith Number

pith:5UOLZMG3

pith:2019:5UOLZMG3IXSPBZAHCAR4P4WTMM

not attested not anchored not stored refs pending

An Improved Cooperative Repair Scheme for Reed-Solomon Codes

Yaqian Zhang, Zhifang Zhang

arxiv:1901.03142 v1 · 2019-01-10 · 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{5UOLZMG3IXSPBZAHCAR4P4WTMM}

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	2026-05-17T23:56:35.439168Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed1cbcb0db45e4f0e4071023c7f2d3632a16c882fc79a4417512eec85f4c4280

Aliases

arxiv: 1901.03142 · arxiv_version: 1901.03142v1 · doi: 10.48550/arxiv.1901.03142 · pith_short_12: 5UOLZMG3IXSP · pith_short_16: 5UOLZMG3IXSPBZAH · pith_short_8: 5UOLZMG3

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/5UOLZMG3IXSPBZAHCAR4P4WTMM \
  | 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: ed1cbcb0db45e4f0e4071023c7f2d3632a16c882fc79a4417512eec85f4c4280

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eaed4c9ee51f2281e5f59c91527600ac5c2e6d169b71fc422ed57388e0a5c569",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-01-10T13:16:06Z",
    "title_canon_sha256": "4b3073728dbfd8ce4290f85627cb0b8173b532a866c7fe58b25a3195dc9b892e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.03142",
    "kind": "arxiv",
    "version": 1
  }
}