In this episode of AWS TechChat, we take a journey into AWS Managed Blockchain and QLDB. I interviewed a Blockchain Specialist, Forrest, who helped us deep dive into the depths of Blockchain technologies and terminologies. We start the show by setting foundations, diving into Cryptocurrencies, Tokenization and Smart Contracts, before walking through the difference between layer 1, layer 2, and sidechains. Followed up by a discussion around Private Blockchain vs public, HyperLedger or Ethereum, and we closed out that segment by answering “Is there one blockchain and why we need multiple blockchains?” We then jumped into blockchain vs databases and how to decide between QLDB or Managed Blockchain. Then dove into how do nodes on the blockchain know of eachother and their transactions. And we wrapped that all up with some use cases we’ve heard and by looking at where customers should start their blockchain journey. Thanks for joining again Forrest. Thank you for indulging my questions and allowing us to dive deep into that knowledge you’ve amassed over the years. Speakers Shai Perednik - Sr. Solutions Architect, AWS Forrest Colyer - Blockchain Specialist SA, AWS Getting Started https://docs.aws.amazon.com/qldb/latest/developerguide/getting-started.html https://docs.aws.amazon.com/managed-blockchain/latest/hyperledger-fabric-dev/managed-blockchain-get-started-tutorial.html Customer stories https://d1.awsstatic.com/events/reinvent/2019/Enterprise_solutions_with_blockchain_Use_cases_from_Nestle_Sony_Music_and_Workday_BLC204.pdf and https://www.youtube.com/watch?v=P6vPvZ0-7dY How Contura Energy built a letter of credit application on Amazon Mana... (https://aws.amazon.com/blogs/database/how-contura-energy-built-a-letter-of-credit-application-on-amazon-managed-blockchain/) https://aws.amazon.com/managed-blockchain/customers/ Resources Deploy an Ethereum node on Amazon Managed Blockchain | AWS Database Bl... (https://aws.amazon.com/blogs/database/deploy-an-ethereum-node-on-amazon-managed-blockchain/)” Building a serverless blockchain application with Amazon Managed Block... (https://aws.amazon.com/blogs/database/building-a-serverless-blockchain-application-with-amazon-managed-blockchain/) Integrate Amazon Managed Blockchain identities with Amazon Cognito | A... (https://aws.amazon.com/blogs/database/integrate-amazon-managed-blockchain-identities-with-amazon-cognito/) Tracking activity in Amazon Managed Blockchain with Amazon CloudWatch... (https://aws.amazon.com/blogs/database/tracking-activity-in-amazon-managed-blockchain-with-amazon-cloudwatch-logs/) Automating Hyperledger Fabric chaincode deployment on Amazon Managed B... (https://aws.amazon.com/blogs/database/automating-hyperledger-fabric-chaincode-deployment-on-amazon-managed-blockchain-using-aws-codepipeline/)