Pith Number

pith:2L56DUUR

pith:2025:2L56DUURMGI74XVNAII5KIHADB

not attested not anchored not stored refs pending

External Evaluation of Discrimination Mitigation Efforts in Meta's Ad Delivery

Aleksandra Korolova, Basileal Imana, John Heidemann, Zeyu Shen

arxiv:2506.16560 v1 · 2025-06-19 · 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{2L56DUURMGI74XVNAII5KIHADB}

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	2026-07-05T11:24:38.418033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2fbe1d2916191fe5ead0211d520e018473b3c36e3a926e4ca51ee19efcbe762

Aliases

arxiv: 2506.16560 · arxiv_version: 2506.16560v1 · doi: 10.48550/arxiv.2506.16560 · pith_short_12: 2L56DUURMGI7 · pith_short_16: 2L56DUURMGI74XVN · pith_short_8: 2L56DUUR

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/2L56DUURMGI74XVNAII5KIHADB \
  | 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: d2fbe1d2916191fe5ead0211d520e018473b3c36e3a926e4ca51ee19efcbe762

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f49f073665dd521200c84416472063c12eb20bfa5237d37fbcbb5c74120feda2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2025-06-19T19:29:26Z",
    "title_canon_sha256": "29e97d6e02233bbcc22088abbc533afbd1da05d34a0299fdbf5161f1b6e9dfad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.16560",
    "kind": "arxiv",
    "version": 1
  }
}