jayjonah8

jayjonah8

Security Researcher at Spearbit. Founder and CEO of Token Finance.

@jayjonah8

39

Spearbit

sr

Public earnings

$1,603.16

495th


Public findings

7


Worked with

Ribbon Finance
Morpho
Timeless
Paladin
Christoph Michel
m4rio
Gerard Persoon
StErMi
Optimum
Ellahi

Biography

Biography

Security researcher at Spearbit and founder & CEO of Token Finance. I have extensive experience across various blockchains and programming languages including solidity, golang, rust and javascript etc.

Expert on the tools used across the industry like Foundry and Hardhat and am capable of easily writing proof of concepts for complex exploits. Also knowledgeable on formal verification and zk technology with regard to zero knowledge proof systems, polynomial commitment schemes and domain specific languages.

I love learning new things and can quickly get up to speed on any protocol.

Top competitions

View all
Contest
Position
Date
Payout
telcoin-network

telcoin-network

18

/ 688

June 2025$853
USDaf-v2

USDaf-v2

3

/ 364

July 2025$750

Private reviews

View all
Engagement
Project title
Timeframe
Researchers
Morpho

Morpho

Morpho Aave v3 Lending Protocol Audit

Jun 2023 - Jun 2023

+2
jayjonah8
StErMi
Christoph Michel
Morpho

Morpho

Morpho Aave v3 Smart Contract Audit

Feb 2023 - Feb 2023

+2
jayjonah8
StErMi
Christoph Michel
Morpho

Morpho

morpho-v1

Nov 2022 - Dec 2022

+2
jayjonah8
StErMi
Christoph Michel
Ribbon Finance

Ribbon Finance

Sigma5

Aug 2022 - Aug 2022

+3
Ellahi
jayjonah8
Christoph Michel
Timeless

Timeless

Timeless Finance

Apr 2022 - May 2022

Calvin Boehr
jayjonah8
Christoph Michel

Security portfolio

Title
Description
ImmunifiRanked #118 on Immunifi all time.
Evmos Cosmos Hub$150,000 Immunifi reward for critical bug found in the golang based Evmos blockchain. Bug was capable of bringing the blockchain to a halt crippling every protocol built upon it.
Code4renaRanked #53 all time on Code4rena.