Pith Number

pith:KUJFNJNP

pith:2019:KUJFNJNPPTTISCOENQI4V3YNV4

not attested not anchored not stored refs pending

Entropy Estimation of Physically Unclonable Functions via Chow Parameters

Alexander Schaub, Joseph, Joseph J. Boutros, Olivier Rioul

arxiv:1907.05494 v1 · 2019-07-11 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KUJFNJNPPTTISCOENQI4V3YNV4}

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	2026-05-17T23:40:48.209488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

551256a5af7ce68909c46c11caef0daf3b07fd903ca168aebb7bbeacaeae6136

Aliases

arxiv: 1907.05494 · arxiv_version: 1907.05494v1 · doi: 10.48550/arxiv.1907.05494 · pith_short_12: KUJFNJNPPTTI · pith_short_16: KUJFNJNPPTTISCOE · pith_short_8: KUJFNJNP

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/KUJFNJNPPTTISCOENQI4V3YNV4 \
  | 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: 551256a5af7ce68909c46c11caef0daf3b07fd903ca168aebb7bbeacaeae6136

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17aa92d2ceef64786eff8b97d1c3c6ca185c30c62becaf846a2a5b430f3e28c2",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-07-11T21:22:58Z",
    "title_canon_sha256": "73786370f84fdc0592de2f657b8e9fffed0834f9f355288ea51971c688ddc6a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.05494",
    "kind": "arxiv",
    "version": 1
  }
}