blockdev

What I do:

Build things I like; Smart contracts, ZK, tools, infra (See Open source work below).
Member of Optimism Developer Advisory Board.
ZK & Smart contract auditor.

What I used to do:

Reach out for audit and development work at the bird app @blockdeveth.

Contest Judging

2025

Aligned Layer Cantina ZKP verification layer on EigenLayer, $100K contest pot. 📜

2024

2025

2024

Hyperware Web3 operating system. 📜
Balmy DeFi Guardian secured DeFi earning. 📜
Clave AA Email recovery using zk-email. 📜
Coinbase DeFi Wrapped tokens. 📜
Biconomy/rhinestones-smartsessions AA Module for ERC-7579 compatible smart accountsfor granular control over session keys. 📜 📜
Biconomy Nexus AA ERC-7579 Modular Smart Account. 📜
Clave Ztake DeFi Staking contract 📜
Fastlane Atlas AA Execution abstraction protocol for the EVM 📜
Semaphore PSE ZK Signaling through group membership. 📜
Clave-1 Spearbit AA Passkey Validator. 📜
Blast Spearbit L2 Infra OP-fork with native yield. 📜
Axiom-2 Spearbit ZK Coprocessor.
ZKP2P-1 PSE ZK Fiat on and off-ramp removing trust on the party you are transacting against. Built on Email wallet.
Anon Aadhar PSE ZK Prove properties based on Aadhar card (Indian ID) without revealing its content.
SAP Spearbit NFT Event registeration through NFT.

2023

ZKP2P PSE ZK Fiat on and off-ramp removing trust on the party you are transacting against. Built on Email wallet.
Email Wallet PSE ZK Wallet controlled by email with content verification onchain.
Rate limiting nullifier PSE ZK A mindblowing way to prevent spam on a network. 📜
Polygon zkEVM Spearbit ZK Fast prover (STARK) & verifier (SNARK). 📜
PLUME PSE ZK Verifiably Deterministic Signatures on ECDSA. 📜
Axiom-1 Spearbit Gas optimization audit.
Coinbase Spearbit AA Smart Contract Wallet. 📜
Alchemy-1 Spearbit AA Smart Contract Wallet. 📜
Clave Spearbit AA Smart Contract Wallet. 📜
Axiom Spearbit ZK Coprocessor.
Alchemy Spearbit AA Smart Contract Wallet.
Fun Solo AA Smart Contract Wallet. 📜
Astaria-1 Spearbit NFT-fi NFT lending protocol. 📜
Bunni Oracle yAudit DeFi price oracle for Bunni tokens & Uniswap v3 LP positions. 📜
Vmex yAudit DeFi Aave v2 fork introducing tranches for risk isolation. 📜
LI.FI-1 Spearbit Bridge Bridge aggregator. 📜

2022

Circom Bigint PSE ZK Bigint operations in circom used for wrong field verification. 📜
Various projects at Privacy and Scaling Explorations @ Ethereum Foundation.
LlamalendV2 yAudit NFT-fi NFT lending protocol. 📜
LlamapayV2 yAudit DeFi Token streaming protocol. 📜
Astaria Spearbit NFT-fi NFT lending protocol. 📜
Connext NXTP Spearbit Bridge Non-custodial transfers between EVM chains. 📜
Nomad Bridge Relaunch & Recovery Spearbit Bridge
NounsDAO Token Buyer yAudit DeFi Buy stablecoin against ETH at Chainlink price. 📜
LI.FI Spearbit Bridge Bridge aggregator. 📜
Connext Amarok Spearbit Bridge Non-custodial transfers between EVM chains. 📜
yFU NFT yAudit NFT Simple NFT collection. 📜
Yearn BalancerLpFactory yAudit DeFi Yearn strategy. 📜
Superfluid yAudit DeFi Token streaming protocol. 📜
Singularity DEX yAudit DeFi AMM providing single-sided ERC20 token pools. 📜
Porter Spearbit DeFi Onchain bonds for DAOs. 📜

ArcPay: Payment validium.
DA aggregator: Library to post data on any DA (Celestia, Avail, EigenDA, NEAR).
Crypto Search Engine: Search engine to search across crypto links using Defillama data.
Ditto protocol: calvbore and I worked on building a SALSA inspired NFT Futures protocol.
Proof of solvency for centralized exchanges, a work in progress: This is a prototype Halo2 implementation of Vitalik's proof of solvency post.
Loogie Tank: First Composable SVG NFT which led to EIP-4883, live at OpenSea; Tweet.
Stark-mfer: Gradual Dutch Auction and NFT Bridge in Cairo for Starknet.

Tips for writing secure circom: 101 talk for Secureum-Veridise ZK week; Tweet from Veridise.
Just enough Elliptic Curve for Ethereum: Behind the scene look at the key generation process; Tweet.
Shielded transfers for any asset: Uses ZK for an auditable and private asset transfer (native, ERC20, ERC721, ERC1155) protocol.
Tornado Cash 101: Explains Tornado Cash protocol from the basics; Tweet.
ECDSA Vulnerability POC: Shows several footguns of integrating ECDSA signatures; Tweet.