Jonatas Martins

Jonatas Martins

Hacking - Breaking - Learning

@jonatascm

100

Spearbit

asr

resident

Public earnings

$11,903.67

172nd


Public findings

54


Achievements


Worked with

infiniFi
Cod3x
NashPoint
MakerDAO
Uniswap
Centrifuge
cccz
m4rio
Gerard Persoon
Christoph Michel
cergyk
r0bert

Biography

I’ve been working as a Security Researcher at Spearbit since 2022. My background as a Web2 web/mobile developer helped me transition into blockchain security, where I’ve focused on identifying vulnerabilities and improving the security of diverse projects, including Uniswap, Maple, Coinbase, Maker, Centrifuge, and others.

Most of my work is around DeFi protocols, primarily in Solidity, but I’ve recently added Rust to my skillset. In 2024, I also worked as a judge for Cantina and currently act as a triager for Cantina’s bug bounty programs.

Here are some of my previous contributions:

Top competitions

View all
Contest
Position
Date
Payout
grass

grass

3

/ 205

June 2024$1,882
Blast

Blast

51

/ 600

January 2024$1,098
inclusive-monorepo

inclusive-monorepo

5

/ 251

January 2025$1,096
defi-app-contracts

defi-app-contracts

9

/ 361

February 2025$1,029
safe-extensions

safe-extensions

27

/ 228

May 2024$837

Private reviews

View all
Engagement
Project title
Timeframe
Researchers
infiniFi

infiniFi

DeFi Security Review: InfiniFi Protocol Audit

Mar 2025 - Mar 2025

+1
r0bert
noah.eth
Jonatas Martins
NashPoint

NashPoint

NashPoint Smart Contract Security Audit

Jan 2025 - Jan 2025

Kurt Barry
Jonatas Martins
Gerard Persoon
Cod3x

Cod3x

cod3x-lend

Dec 2024 - Jan 2025

Saw-mon and Natalie
Jonatas Martins
cergyk
MakerDAO

MakerDAO

MakerDAO Arbitrum Token Bridge Audit

Oct 2024 - Oct 2024

m4rio
Jonatas Martins
MakerDAO

MakerDAO

MakerDAO OP Token Bridge Audit Report

Oct 2024 - Oct 2024

m4rio
Jonatas Martins

Security portfolio

Title
Description
2023 RewindContributed to the creation of 2023 Rewind and ranked #2 in incident writing contest
Certora Prover Tools - Aave Grant ProgramThe Aave Grant Program was a program to verify with Certora Prover the Aave Starknet Bridge and Aave Token V3. I was able to identify an issue during the Aave Starknet Bridge security review.