Pith Number

pith:4YPY6MZX

pith:2018:4YPY6MZXYZZFSBUTRKMFJGOO4S

not attested not anchored not stored refs pending

On the Fundamental Limit of Private Information Retrieval for Coded Distributed Storage

Alexandre Graell i Amat, Eirik Rosnes, Hsuan-Yin Lin, Siddhartha Kumar

arxiv:1808.09018 v1 · 2018-08-27 · 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{4YPY6MZXYZZFSBUTRKMFJGOO4S}

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	2026-05-18T00:07:04.871545Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e61f8f3337c6725906938a985499cee494bac507310c5f2a572c7223bf858529

Aliases

arxiv: 1808.09018 · arxiv_version: 1808.09018v1 · doi: 10.48550/arxiv.1808.09018 · pith_short_12: 4YPY6MZXYZZF · pith_short_16: 4YPY6MZXYZZFSBUT · pith_short_8: 4YPY6MZX

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/4YPY6MZXYZZFSBUTRKMFJGOO4S \
  | 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: e61f8f3337c6725906938a985499cee494bac507310c5f2a572c7223bf858529

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "215b96b6d471b8e874bac9988d9b285fa66d5ec0321bc5a63e0291c0c9140a8d",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-08-27T20:00:06Z",
    "title_canon_sha256": "b0f5360328d8e2eb8dcd2806d620ab9f5c5aef1c7b454df3cbcdcd4777183ff2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.09018",
    "kind": "arxiv",
    "version": 1
  }
}