Pith Number

pith:QM2VLQ4F

pith:2019:QM2VLQ4FUXJUVLM6OAZFGOXITJ

not attested not anchored not stored refs pending

Private Information Retrieval from Heterogeneous Uncoded Storage Constrained Databases with Reduced Sub-Messages

Mingyue Ji, Nicholas Woolsey, Rong-Rong Chen

arxiv:1904.02131 v2 · 2019-04-03 · 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{QM2VLQ4FUXJUVLM6OAZFGOXITJ}

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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.

Cited by

1 paper in Pith

Breaking the MDS-PIR Capacity Barrier via Joint Storage Coding

Receipt and verification

First computed	2026-07-05T00:13:01.750212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

833555c385a5d34aad9e7032533ae89a6f1ed56200cbe9368a0bae2fb35d3e0e

Aliases

arxiv: 1904.02131 · arxiv_version: 1904.02131v2 · doi: 10.48550/arxiv.1904.02131 · pith_short_12: QM2VLQ4FUXJU · pith_short_16: QM2VLQ4FUXJUVLM6 · pith_short_8: QM2VLQ4F

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/QM2VLQ4FUXJUVLM6OAZFGOXITJ \
  | 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: 833555c385a5d34aad9e7032533ae89a6f1ed56200cbe9368a0bae2fb35d3e0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57692a4ce95d5f248fdffe23e106f4db99436c1d9e0f780e82d6b235101728f9",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-04-03T17:49:35Z",
    "title_canon_sha256": "366ff112d192cee43d5ca2ee6eba099ad0968d71ebc9ce5e136c471975dae6fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02131",
    "kind": "arxiv",
    "version": 2
  }
}