Ativos Digitais no blockchain - Blockcrypto
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O documento discute o uso de blockchain permissionado e redes Hyperledger para compartilhar informações entre empresas. Apresenta o Hyperledger como uma opção para desenvolver soluções descentralizadas entre organizações confiáveis e discute casos de uso em cadeias de suprimentos e mercados.
Ativos Digitais no blockchain - Blockcrypto
- 1. ATIVOS DIGITAIS NO HYPERLEDGER BLOCKCHAIN Percival Lucena
- 2. AGENDA • O QUE É UM BLOCKCHAIN PERMISSIONADO? • QUAIS REDES DE BLOCKCHAIN MAIS ATIVAS (INTL) E BRASIL? • COMO DESENVOLVER UMA SOLUÇÃO USANDO HYPERLEDGER?
- 3. Redes sociais – organizações centralizadas
- 4. Redes de Blockchain Descentralizadas e Abertas
- 5. Blockchain Abertos: Bitcoin, Ethereum
- 7. 7 © 2017 IBM Corporation Insurer records Registro Auditor Registro Governo Registro Transportadora Registro Banco Registro Empresa B Blockchain Blockchain Permissionado Registro Empresa A
- 8. 8 © 2017 IBM Corporation Blockchains Conectados
- 10. © 2017 IBM Corporation
- 11. © 2017 IBM Corporation +1M transactios + 300 products
- 12. © 2017 IBM Corporation • Uma rede de Blockchain para compartilhar eventos de remessa, mensagens e documentos em todos os atores e sistemas do ecossistema da cadeia de suprimentos. • Fornece visibilidade compartilhada e estado compartilhado para remessas de contêiner • Custo reduzido e maior eficiência através do comércio sem papel • +3 milhões de transações • A rede já envolve +90 empresas. São +20 operadores portuários e terminais em todo o mundo, autoridades alfandegárias na Holanda, Arábia Saudita, Cingapura, Austrália e Peru, além de expedidores de carga, transporte e logística. Open global trade digitization platform Terminal Trucker Rail Forwarder CarrierAuthority Authority
- 13. 13 © 2017 IBM Corporation AGTRACE.AG
- 14. © 2017 IBM Corporation AGTRACE.AG
- 15. © 2017 IBM Corporation
- 16. 16 VERIDIUM • When an action is taken in a supply chain management system, like the purchase of raw materials, shipment of materials, or input of a manufacturing order, the user defines it as an EcoSmart-Transaction™. • The EcoSmart-ProtocolTM defines parameters for the EcoSmart-Transaction™, including a fiat amount, transaction type and other variables. These parameters are captured from the integrated supply chain management system. • When the transaction is executed, Veridium’s technology platform automatically purchases VERDE tokens in an amount that satisfies the corresponding offset fee. • The VERDE offset fee is used in the following ways: o 90% of the VERDE is used to purchase CARBON tokens on Veridium Exchange. o 5% of the VERDE is burned. o 5% of the VERDE is paid as a fee to Veridium Exchange and to EcoSmart-Labs for use of their protocol. • The CARBON tokens purchased are subsequently burned in order to use the underlying carbon credit.
- 17. 17 DESENVOLVENDO PARA REDES HYPERLEDGER
- 18. 18 DESENVOLVENDO PARA REDES HYPERLEDGER • Um contato inteligente é uma coleção de procedimentos de negócios • Todo contato inteligente é executado em seu próprio recipiente privado • Todo contato inteligente pode acessar apenas seus próprios ativos • Smart Contract pode ser executado em um ambiente seguro de memória, como o Intel SGX ou o mainframe
- 19. 19 Criando Redes de Blockchain Hyperledger
- 20. 20 © 2017 IBM Corporation Toronto Deployed London Planned Singapore Sydney Tokyo Dallas Ashburn Frankfurt São Paolo IBM Blockchain Platform Locations
- 21. Vehicle Vehicle Listing AuctioneerMember Place Offer Close Bidding Transaction Processors H Hyperledger Composer
- 22. H Hyperledger Composer CLI https://hyperledger.github.io/composer/v0.19/reference/commands
- 23. H Hyperledger Composer Loopback
- 24. 24 – Yo-generator gera UI em Angular2 baseado no modelo e lógica expostos via webservice REST (Loopback) – Gera testes unitários model Hyperledger Composer yo-angular
- 25. 25 Hyperledger Accord – Legal Smart Contracts
- 26. 26 Hyperledger Accord – Ergo Transactions
Notas do Editor
- #8: The novel Blockchain architecture give participants the ability to share a ledger which is updated every time a transaction occurs through peer to peer replication. Cryptography is used to ensure that network participants see only the parts of the ledger that are relevant to them, and that transactions are secure, authenticated and verifiable. Blockchain also allows the contract for asset transfer to be embedded in the transaction database determining the conditions under which the transaction can occur. Network participants agree how transactions are verified through consensus or similar mechanisms. Government oversight, compliance & audit can be part of the same network. Participants SAME AS BEFORE – this is not a disintermediation play CONSENSUS– means all participants agree that a transaction is valid PROVENANCE– means participants know where the asset came from and how it’s ownership has changed over time IMMUTABILITY– means no participant can tamper with a transaction once it’s agreed. If a transaction was in error then a NEW transaction must be used to reverse the error, with both visible FINALITY– means that there is ONE place to determine the ownership of an asset or completion of a transaction. This is the role of the SHARED LEDGER.