Pith Number

pith:3XM4WYJW

pith:2019:3XM4WYJWDXF3AMZYWCB7XI74KC

not attested not anchored not stored refs pending

A New Design of Private Information Retrieval for Storage Constrained Databases

Mingyue Ji, Nicholas Woolsey, Rong-Rong Chen

arxiv:1901.07490 v1 · 2019-01-22 · 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{3XM4WYJWDXF3AMZYWCB7XI74KC}

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	2026-05-17T23:55:44.640658Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddd9cb61361dcbb03338b083fba3fc50b58e47c9664640b2e3d8abea4fecc5cf

Aliases

arxiv: 1901.07490 · arxiv_version: 1901.07490v1 · doi: 10.48550/arxiv.1901.07490 · pith_short_12: 3XM4WYJWDXF3 · pith_short_16: 3XM4WYJWDXF3AMZY · pith_short_8: 3XM4WYJW

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/3XM4WYJWDXF3AMZYWCB7XI74KC \
  | 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: ddd9cb61361dcbb03338b083fba3fc50b58e47c9664640b2e3d8abea4fecc5cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8217295324e064e4e5b75a44e575602051beec82ff6a68e7d27dce3c26dbca7a",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-01-22T18:09:41Z",
    "title_canon_sha256": "ad3bd4a9c3c3e1b13af4d98bae2d5dbf5306a1d294b8c6e4c583b0d432e7c222"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.07490",
    "kind": "arxiv",
    "version": 1
  }
}