Pith Number

pith:QZDCVKCA

pith:2014:QZDCVKCAKLWC6PACWLFZ5BMIUY

not attested not anchored not stored refs pending

Privacy-preserving Loyalty Programs

Alberto Blanco-Justicia, Josep Domingo-Ferrer

arxiv:1411.3961 v2 · 2014-11-14 · 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{QZDCVKCAKLWC6PACWLFZ5BMIUY}

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	2026-05-18T02:32:30.431422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86462aa84052ec2f3c02b2cb9e8588a61130f197f2a7e9eb49db1ec7b68cbd62

Aliases

arxiv: 1411.3961 · arxiv_version: 1411.3961v2 · doi: 10.48550/arxiv.1411.3961 · pith_short_12: QZDCVKCAKLWC · pith_short_16: QZDCVKCAKLWC6PAC · pith_short_8: QZDCVKCA

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/QZDCVKCAKLWC6PACWLFZ5BMIUY \
  | 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: 86462aa84052ec2f3c02b2cb9e8588a61130f197f2a7e9eb49db1ec7b68cbd62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf3626bb3b324c1f84a761233fef456b583caebb693acf4d08c8ae39ed74d52b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2014-11-14T16:32:44Z",
    "title_canon_sha256": "3212d7256001ba06c6dfa4d592f7222c568325ef2f9984b3cf881ee8e10795cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.3961",
    "kind": "arxiv",
    "version": 2
  }
}