Pith Number

pith:NQ4BOL3Y

pith:2016:NQ4BOL3YACX5KE2KHCAZUR52NZ

not attested not anchored not stored refs pending

Locally Repairable Regenerating Code Constructions

Chih-Chun Wang, Imad Ahmad

arxiv:1605.00020 v2 · 2016-04-29 · 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{NQ4BOL3YACX5KE2KHCAZUR52NZ}

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	2026-05-18T01:15:33.848106Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c38172f7800afd5134a38819a47ba6e7b7bbddca3d8d4d7aa675e4e03bc6f37

Aliases

arxiv: 1605.00020 · arxiv_version: 1605.00020v2 · doi: 10.48550/arxiv.1605.00020 · pith_short_12: NQ4BOL3YACX5 · pith_short_16: NQ4BOL3YACX5KE2K · pith_short_8: NQ4BOL3Y

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/NQ4BOL3YACX5KE2KHCAZUR52NZ \
  | 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: 6c38172f7800afd5134a38819a47ba6e7b7bbddca3d8d4d7aa675e4e03bc6f37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16ced6a549efd44d6bcee79cec661fa680694d7e48cca6ca8cc9568edc0dfc68",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2016-04-29T20:23:17Z",
    "title_canon_sha256": "974b6021294a4cce51874d2ab34670352e5575e8fab67d808d978fa277779107"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.00020",
    "kind": "arxiv",
    "version": 2
  }
}