CLICK TO EDIT MASTER TITLE STYLE Click to add subtitle Location Date ONTOCHAIN SUMMIT 2023 ONTOCHAIN Projects Demonstration 22/06/2023 

| ONTOCHAIN.NGI.EU 2 PROJECT OVERVIEW • In order to accelerate the adoption of electric vehicles, the charging infrastructure needs to grow much faster. • The DEFev project allows utilizing all the existing private charging stations. Each owner can share their equipment thanks to a fully decentralized P2P marketplace. DEFev provides the blockchain solution where each station can offer interoperable charging services without any central entity. • The owner uses a DAPP to create a digital twin in the blockchain. Then, any EV driver can find it on the map, pay for the service and charge his car. • Managing every step of the process on-chain ensures traceability of transactions (smart cities), transparency and instant payment while building the reputation of the owner. • DEFev is developed by Werenode. 

| ONTOCHAIN.NGI.EU 3 ARCHITECTURE User wallet EVENT Charging point Owner Dapp DEFev DEFev Smart Contract Daemon piloting the charging Point Shared File Sys Web Server BLOCKCHAIN EV User Reputation Smart Contract Web Server 

| ONTOCHAIN.NGI.EU 4 ONTOCHAIN SERVICES User wallet EVENT Charging point Owner Dapp DEFev DEFev Smart Contract Daemon piloting the charging Point IPFS Web Server BLOCKCHAIN EV User Reputation Smart Contract Web Server Iexec Oracle Reputable (*) Gimly OC File Storage (*) modified 

| ONTOCHAIN.NGI.EU LIVE DEMO ! 

| ONTOCHAIN.NGI.EU 6 RESOURCES • The Dapp for the owner and for the EV driver are available at : https://defev.io/ • The smart contracts are deployed onChain: https://blockscout.bellecour.iex.ec/ Under the names EVSEAB_Pilot and ScoringBoard (code available) 

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