Pith Number

pith:EPUJAAHN

pith:2018:EPUJAAHNRSZIXPUFH2ZE3L6JP5

not attested not anchored not stored refs pending

Private Information Retrieval from Non-Replicated Databases

Karim Banawan, Sennur Ulukus

arxiv:1901.00004 v1 · 2018-12-31 · cs.IT · cs.CR · 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{EPUJAAHNRSZIXPUFH2ZE3L6JP5}

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	2026-05-17T23:57:07.096086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23e89000ed8cb28bbe853eb24dafc97f6ce40f9bc83ae70581f82fdfbb7ed29e

Aliases

arxiv: 1901.00004 · arxiv_version: 1901.00004v1 · doi: 10.48550/arxiv.1901.00004 · pith_short_12: EPUJAAHNRSZI · pith_short_16: EPUJAAHNRSZIXPUF · pith_short_8: EPUJAAHN

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/EPUJAAHNRSZIXPUFH2ZE3L6JP5 \
  | 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: 23e89000ed8cb28bbe853eb24dafc97f6ce40f9bc83ae70581f82fdfbb7ed29e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e47f01248a300ce69a7d3b71f933119d585942f006ac63307798a11a88bb5ac",
    "cross_cats_sorted": [
      "cs.CR",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-12-31T18:52:00Z",
    "title_canon_sha256": "ad31a424830628e88a92e9d3aea9b5f5a1dc168a0dfcfea573ec374e40ad33ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.00004",
    "kind": "arxiv",
    "version": 1
  }
}