Pith Number

pith:VQS2MPFZ

pith:2026:VQS2MPFZLY6OZG77LX773R6AVG

not attested not anchored not stored refs pending

High-Risk AI Systems and the Problem of Identity in the European AI Act

Andrea Ferrario

arxiv:2605.23922 v1 · 2026-04-17 · cs.CY · cs.AI · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VQS2MPFZLY6OZG77LX773R6AVG}

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	2026-05-26T00:02:22.081795Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac25a63cb95e3cec9bff5dfffdc7c0a9aa4c8dce9e8778719f30dd7165f2d151

Aliases

arxiv: 2605.23922 · arxiv_version: 2605.23922v1 · doi: 10.48550/arxiv.2605.23922 · pith_short_12: VQS2MPFZLY6O · pith_short_16: VQS2MPFZLY6OZG77 · pith_short_8: VQS2MPFZ

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/VQS2MPFZLY6OZG77LX773R6AVG \
  | 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: ac25a63cb95e3cec9bff5dfffdc7c0a9aa4c8dce9e8778719f30dd7165f2d151

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2515a4828f929f5f3ab84f1e51890ea577205a053a8b4b2a4997bc0d373ca7c7",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2026-04-17T20:24:29Z",
    "title_canon_sha256": "072e1bbae5270052172f31d8a08653ceb1d877456f136308ab1001630424f204"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.23922",
    "kind": "arxiv",
    "version": 1
  }
}