Pith Number

pith:5QV32MB2

pith:2019:5QV32MB2CCZMD35S2QHWOHMEZY

not attested not anchored not stored refs pending

EOP: An Encryption-Obfuscation Solution for Protecting PCBs Against Tampering and Reverse Engineering

Domenic Forte, Mark M. Tehranipoor, Xiaolin Xu, Zimu Guo

arxiv:1904.09516 v1 · 2019-04-20 · 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{5QV32MB2CCZMD35S2QHWOHMEZY}

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	2026-05-17T23:48:04.014632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec2bbd303a10b2c1efb2d40f671d84ce286df41ea5429ea2b54824fdd6923ac9

Aliases

arxiv: 1904.09516 · arxiv_version: 1904.09516v1 · doi: 10.48550/arxiv.1904.09516 · pith_short_12: 5QV32MB2CCZM · pith_short_16: 5QV32MB2CCZMD35S · pith_short_8: 5QV32MB2

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/5QV32MB2CCZMD35S2QHWOHMEZY \
  | 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: ec2bbd303a10b2c1efb2d40f671d84ce286df41ea5429ea2b54824fdd6923ac9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0e1a2589a87644836e74c0bb2da1ba12b89da0fa94687cb9a0b660c3edcab8f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-04-20T23:57:09Z",
    "title_canon_sha256": "f1f2dfc2b271105e9c2511ba9f96c6a938697d95e22493c7e59b028209433dfd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09516",
    "kind": "arxiv",
    "version": 1
  }
}