Pith Number

pith:5BUWGVMA

pith:2018:5BUWGVMAF4MBEIDYWITOD6E25K

not attested not anchored not stored refs pending

The Accuracy of the Demographic Inferences Shown on Google's Ad Settings

Gerald Friedland, Jaeyoung Choi, Michael Carl Tschantz, Nicholas Weaver, Serge Egelman

arxiv:1808.07549 v1 · 2018-08-22 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5BUWGVMAF4MBEIDYWITOD6E25K}

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	2026-05-18T00:07:26.995442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8696355802f18122078b226e1f89aeaafbe482ed545a396f22efdc988024ad4

Aliases

arxiv: 1808.07549 · arxiv_version: 1808.07549v1 · doi: 10.48550/arxiv.1808.07549 · pith_short_12: 5BUWGVMAF4MB · pith_short_16: 5BUWGVMAF4MBEIDY · pith_short_8: 5BUWGVMA

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/5BUWGVMAF4MBEIDYWITOD6E25K \
  | 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: e8696355802f18122078b226e1f89aeaafbe482ed545a396f22efdc988024ad4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85349183aefbe1a7a2c67a7a74514af0f68d29e6d40e65fca98d0f685a33dd6f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2018-08-22T20:10:44Z",
    "title_canon_sha256": "9ecc6ed213adf0b55dab041f6aee7b0184cfec4d37097c20af36f44a310a2dc4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07549",
    "kind": "arxiv",
    "version": 1
  }
}