Pith Number

pith:HIEQZAE3

pith:2025:HIEQZAE3PAXHWTDQRGIXSB6OZD

not attested not anchored not stored refs pending

Private Hyperparameter Tuning with Ex-Post Guarantee

Alexander Knop, Badih Ghazi, Chiyuan Zhang, Pasin Manurangsi, Pritish Kamath, Ravi Kumar

arxiv:2508.15183 v1 · 2025-08-21 · cs.CR · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HIEQZAE3PAXHWTDQRGIXSB6OZD}

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	2026-07-05T11:57:07.838927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a090c809b782e7b4c7089917907cec8d7127e36fd059050f7121de0f0ad438a

Aliases

arxiv: 2508.15183 · arxiv_version: 2508.15183v1 · doi: 10.48550/arxiv.2508.15183 · pith_short_12: HIEQZAE3PAXH · pith_short_16: HIEQZAE3PAXHWTDQ · pith_short_8: HIEQZAE3

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/HIEQZAE3PAXHWTDQRGIXSB6OZD \
  | 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: 3a090c809b782e7b4c7089917907cec8d7127e36fd059050f7121de0f0ad438a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d79405b8bcca728962ae19e0313f902e9231d15b4efdc7d25dafc6cf5cdc2e9c",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2025-08-21T02:42:23Z",
    "title_canon_sha256": "78dde9cc2883396871ec68716fb99eacc47fe5b80d3599f1b49a1dfca5c22b2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.15183",
    "kind": "arxiv",
    "version": 1
  }
}