Ontospace: a stable, scalable, efficient and cost-effective network for ONTOCHAIN

Slides presented at the ONTOCHAIN Summit for Trustworthy Internet by Mirek Sopek, Founder of MakoLab, Tomasz Pawlik & Dominik Kuziński

Transcript

1. CLICK TO EDIT MASTER TITLE STYLE Click to add subtitle Location Date ONTOSPACE Blockchain solution for graph data storage Berlin 02.06.2022
2. | ONTOCHAIN.NGI.EU 2 ONTOSPACE BLOCKCHAIN SOLUTION FOR GRAPH DATA STORAGE Main challenge:  Storage of graph data secured with Blockchain  Create an ecosystem of Blockchains Modified Ethereum Client: New Hashing Algorithm: Authentication: We have chosen Besu client New method of calculating graph digest With use of well known MetaMask Tethering mechanism : Storage of graph data secured with Blockchain
3. | ONTOCHAIN.NGI.EU 3 ONTOSPACE MODIFIED BESU CLIENT Problem: By default, Ethereum client and EVM do not support direct reads from external data sources Solution: Modification of existing RETURN opcode, not interfering with Ethereum specification
4. | ONTOCHAIN.NGI.EU 4 ONTOSPACE NEW HASHING ALGORITHM New hashing algorithm - Interwoven Hash of Vicious Circle Free Graph: • Java implementation of algorithm with extensive test harness • Proper digest calculation in as many different cases as possible • Secure • Compatible with specification provided in publication :  graphchain.io/IEEE
5. | ONTOCHAIN.NGI.EU 5 ONTOSPACE AUTHENTICATION WITH METAMASK Benefits: • Well-known in community • Secure • Restricted access to system functionalities • Easy to, use one-click login flow • Intuitive user interface
6. | ONTOCHAIN.NGI.EU 6 ONTOSPACE TETHERING MECHANISM Tethering mechanism: • Connection to Parent Chain • Possibility for existence in ecosystem of Blockchains • Simple to implement
7. | ONTOCHAIN.NGI.EU 7 SYNCHRONIZATION BETWEEN NODES Improved synchronization mechanism: • Blockchain driven synchronization of triplestores • Can sync graphs from every node • Mechanism hidden from end-user (functions like normal triplestore)
8. | ONTOCHAIN.NGI.EU 8 SOLUTION Ecosystem component​ Description Ontospace The entire ecosystem of Blockchains and semantic data pools​ OntoSidechain A single Blockchain of Layer-2 sidechain type. It may have both Blockchain and semantic software modules but can also be a generic sidechain​ Ontonode A single node of OntoSidechain. If the OntoSidechain is compliant with GraphChain concept, Ontonode contains Blockchain node, Ontopod and Ontoshell Ontopod A part of Ontonode responsible for handling semantic data chains of named RDF graphs​ Ontoshell Software modules for external communication for Ontonode (API & Linked data HTTP)​
9. | ONTOCHAIN.NGI.EU 9 SOLUTION Ecosystem co mponent​ Description​ Ontospace The entire ecosystem of Blockchains and semantic data pools​ OntoSidechain A single Blockchain of Layer-2 sidechain type. It may have both Blockchain and semantic software modules but can also be a generic sidechain​ Ontonode A single node of OntoSidechain. If the OntoSidechain is compliant with GraphChain concept, Ontonode contains Blockchain node, Ontopod and Ontoshell Ontopod A part of Ontonode responsible for handling semantic data chains of named RDF graphs​ Ontoshell Software modules for external communication for Ontonode (API & Linked data HTTP)​ Blockchain node Ethereum Besu client.​ Sync middlewar e Our own mechanism for sycnhronization of blockchain node and Ontopod.​
10. BEYOND THE PROOF OF CONCEPT ONTOCHAIN OPEN CALL 2
11. | ONTOCHAIN.NGI.EU 11 FINAL OUTCOME Ecosystem with the primary and fundamental goal of offering:  Stable  Scalable  Efficient  Cost-effective network
12. | ONTOCHAIN.NGI.EU 12 GRAPHCHAIN USE CASE: DIGITAL IDENTITY GraphChain for the LEI system: https://lei.info
13. | ONTOCHAIN.NGI.EU 13 Sidechain as a separate entity:  Out-of-the-box solution  Graph data storage  Secure and transparent thanks to the Blockchain technology Sidechain as a separate entity:  Data ownership in blockchain  Monitor and limit data usage Support for different processes based on created sidechains:  Scalability
14. | ONTOCHAIN.NGI.EU 14
15. graphchain.io HTTPS://GITHUB.COM/ONTOCHAIN/ONTOSPACE