Jonatas Martins

Jonatas Martins

Hacking - Breaking - Learning

@jonatascm

100

Spearbit

asr

resident

Public earnings

$11,903.49

169th


Public findings

51


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

/ 204

June 2024$1,882
Blast

Blast

51

/ 599

January 2024$1,098
inclusive-monorepo

inclusive-monorepo

5

/ 249

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
OlympusDAO

OlympusDAO

Bophades2

Jun 2022 - Jul 2022

Jonatas Martins
HickupHH3
Christoph Michel
Exponent Network

Exponent Network

Saft Protocol

Jul 2022 - Jul 2022

+5
tqtsar
Maxime Viard
Balázs Kocsis
Maple Finance

Maple Finance

Maple V2

Oct 2022 - Nov 2022

+2
Jonatas Martins
Christoph Michel
Liam Eastwood
Maple Finance

Maple Finance

maple-core-v2-private

Apr 2023 - May 2023

Riley Holterhus
Jonatas Martins
Christoph Michel
Velodrome Finance

Velodrome Finance

Velodrome Finance V2

Feb 2023 - Feb 2023

+2
Alex The Entreprenerd
Jonah Wu
Liam Eastwood

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.