Pith Number

pith:OF7MY7IJ

pith:2013:OF7MY7IJKK7K5XKTG4EGIIZNHX

not attested not anchored not stored refs pending

Discrimination in Online Ad Delivery

Latanya Sweeney

arxiv:1301.6822 v1 · 2013-01-29 · cs.IR · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OF7MY7IJKK7K5XKTG4EGIIZNHX}

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	2026-05-18T03:35:12.196228Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

717ecc7d0952beaedd53370864232d3dc465f75b5eecea802ae3599742ce7b09

Aliases

arxiv: 1301.6822 · arxiv_version: 1301.6822v1 · doi: 10.48550/arxiv.1301.6822 · pith_short_12: OF7MY7IJKK7K · pith_short_16: OF7MY7IJKK7K5XKT · pith_short_8: OF7MY7IJ

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/OF7MY7IJKK7K5XKTG4EGIIZNHX \
  | 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: 717ecc7d0952beaedd53370864232d3dc465f75b5eecea802ae3599742ce7b09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "691dd704ac7bf73e5f1c55bf6ea6e85b86859fa46d3296032911c8808306db50",
    "cross_cats_sorted": [
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2013-01-29T02:59:47Z",
    "title_canon_sha256": "0234c9aa7f4178b94c992ef458005f89c626371bc18c602384d650bbd6514ee1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.6822",
    "kind": "arxiv",
    "version": 1
  }
}