Pith Number

pith:IU5H7Y4R

pith:2019:IU5H7Y4RXWOFQD26NNC7P6CTC4

not attested not anchored not stored refs pending

A framework of constructing placement delivery arrays for centralized coded caching

Jinyu Wang, Minquan Cheng, Qiang Wang, Xi Zhong

arxiv:1908.05865 v3 · 2019-08-16 · cs.IT · math.CO · 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{IU5H7Y4RXWOFQD26NNC7P6CTC4}

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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	2026-07-05T02:44:30.983376Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

453a7fe391bd9c580f5e6b45f7f853171eca3e1b9dd8c3cb5d8a4e9395d31c1f

Aliases

arxiv: 1908.05865 · arxiv_version: 1908.05865v3 · doi: 10.48550/arxiv.1908.05865 · pith_short_12: IU5H7Y4RXWOF · pith_short_16: IU5H7Y4RXWOFQD26 · pith_short_8: IU5H7Y4R

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/IU5H7Y4RXWOFQD26NNC7P6CTC4 \
  | 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: 453a7fe391bd9c580f5e6b45f7f853171eca3e1b9dd8c3cb5d8a4e9395d31c1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2cbb31ec9981294efee6c2ef497ff067641ba10d2264b4e1846db0db57e2e02",
    "cross_cats_sorted": [
      "math.CO",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-08-16T06:45:35Z",
    "title_canon_sha256": "56a496f7f173cfdecd35abd7a2a8917d6335796e40463b4987be2ae5a5d7810a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.05865",
    "kind": "arxiv",
    "version": 3
  }
}