Pith Number

pith:HJDGRSHO

pith:2016:HJDGRSHOFQHGBQCBRJNJTCJXFP

not attested not anchored not stored refs pending

The Capacity of Symmetric Private Information Retrieval

Hua Sun, Syed A. Jafar

arxiv:1606.08828 v2 · 2016-06-28 · cs.IT · cs.CR · cs.IR · 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{HJDGRSHOFQHGBQCBRJNJTCJXFP}

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	2026-05-18T00:40:17.511637Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a4668c8ee2c0e60c0418a5a9989372bd9e22be44f991c040a6b9209e6ab6428

Aliases

arxiv: 1606.08828 · arxiv_version: 1606.08828v2 · doi: 10.48550/arxiv.1606.08828 · pith_short_12: HJDGRSHOFQHG · pith_short_16: HJDGRSHOFQHGBQCB · pith_short_8: HJDGRSHO

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/HJDGRSHOFQHGBQCBRJNJTCJXFP \
  | 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: 3a4668c8ee2c0e60c0418a5a9989372bd9e22be44f991c040a6b9209e6ab6428

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4754ccf8954296d7534d74303e90c0bcfd5ecad664b5c6ebea3c658e0e1f4570",
    "cross_cats_sorted": [
      "cs.CR",
      "cs.IR",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2016-06-28T19:19:13Z",
    "title_canon_sha256": "7de711e617814f5cd7efdb7f77f59221fd098a8f3b5f6feacabc4a5a333992e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.08828",
    "kind": "arxiv",
    "version": 2
  }
}