Pith Number

pith:QQTPQIGR

pith:2012:QQTPQIGR7D4KQQEVYWFFEKK4PO

not attested not anchored not stored refs pending

Differentially Private Grids for Geospatial Data

Ninghui Li, Wahbeh Qardaji, Weining Yang

arxiv:1209.1322 v1 · 2012-09-06 · cs.CR · cs.DB

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QQTPQIGR7D4KQQEVYWFFEKK4PO}

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	2026-05-18T03:46:05.934931Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8426f820d1f8f8a84095c58a52295c7b91c0eb6dd100027dd35fbb50fc7f82e4

Aliases

arxiv: 1209.1322 · arxiv_version: 1209.1322v1 · doi: 10.48550/arxiv.1209.1322 · pith_short_12: QQTPQIGR7D4K · pith_short_16: QQTPQIGR7D4KQQEV · pith_short_8: QQTPQIGR

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/QQTPQIGR7D4KQQEVYWFFEKK4PO \
  | 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: 8426f820d1f8f8a84095c58a52295c7b91c0eb6dd100027dd35fbb50fc7f82e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba43d81851ef9266ceda471e15d4dedbfb8ddd9bb234474de93a219768a6f7b0",
    "cross_cats_sorted": [
      "cs.DB"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2012-09-06T15:47:45Z",
    "title_canon_sha256": "c13b2a0cfb49c5db62f67499067a0a8cf023374e43cea04bea08df93472450bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.1322",
    "kind": "arxiv",
    "version": 1
  }
}