Pith Number

pith:WN7WANUO

pith:2019:WN7WANUOGDXWITGLNK5JC3C5XG

not attested not anchored not stored refs pending

Stealthy Opaque Predicates in Hardware -- Obfuscating Constant Expressions at Negligible Overhead

Christof Paar, Max Hoffmann

arxiv:1910.00949 v1 · 2019-10-01 · 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{WN7WANUOGDXWITGLNK5JC3C5XG}

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	2026-07-05T00:09:20.918323Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b37f60368e30ef644ccb6aba916c5db98d56ecc03ab5a601e157495033236a2f

Aliases

arxiv: 1910.00949 · arxiv_version: 1910.00949v1 · doi: 10.48550/arxiv.1910.00949 · pith_short_12: WN7WANUOGDXW · pith_short_16: WN7WANUOGDXWITGL · pith_short_8: WN7WANUO

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/WN7WANUOGDXWITGLNK5JC3C5XG \
  | 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: b37f60368e30ef644ccb6aba916c5db98d56ecc03ab5a601e157495033236a2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c2ee7765831808fd515733a313d5806c5a166a98a77b8f64b2981f79def228a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-10-01T13:06:38Z",
    "title_canon_sha256": "670be28f8abb12a0f8b737e4d1f01bf01b1b7f59a1a403ddc41c31f4ec233851"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.00949",
    "kind": "arxiv",
    "version": 1
  }
}