Blockdev

Blockdev

Smart contract and ZK security

@0xbok

58

Spearbit

sr

Public earnings

$187.24

624th

Public findings

5

Worked with

Sprinter Tech

ODX

Fastlane

Espresso Systems

Matter Labs

Megapot

Lucas Clemente Vella

Zach Obront

Leo Alt

Christoph Michel

Gerard Persoon

r0bert

Overview Public reviews Private reviews

Biography

Smart contract security

Security Researcher at Spearbit
Resident at yAudit

ZK security

Privacy Scaling Explorations at Ethereum Foundation

Some writings:

Some development work:

WIP Proof of solvency project using Halo2 and KZG: https//github.com/0xbok/proof-cex
NFT Future protocol: https//github.com/ditto-lab/ditto, documentation

Top competitions

Contest	Position	Date	Payout
farcasterattestation-monorepo	29 / 276	January 2025	$187

Private reviews

Engagement	Project title	Timeframe	Researchers
Sprinter Tech	Cross-Chain Security Audit of Sprinter Stash	May 2025 - May 2025
Fastlane	Atlas DeFi Protocol Security Assessment	Apr 2025 - May 2025
ODX	odx-contracts	Apr 2025 - Apr 2025
Matter Labs	zksync-protocol	Mar 2025 - Apr 2025
Espresso Systems	Espresso-monorepo-1003	Mar 2025 - Mar 2025

Security portfolio

Title	Description
Circom bigint	Bigint library for Circom. A EF x Veridise collaboration.
PLUME: Verifiably Deterministic Signatures on ECDSA	Nullifier friendly signature scheme on ECDSA. nullifier friendly signature scheme on ECDSA