various issues in this post, but to examine the central question: > Someone, please show me an application where blockchain is essential. That is, a problem th

various issues in this post, but to examine the central question: > Someone, please show me an application where blockchain is essential. That is, a problem that could not have been solved without blockchain that can now be solved with it. Application: User Alice and Bob want to swap domain names they own, but using an escrow to facilitate the trade safely and mitigate counterparty risk - and they want this exchange to settle in mere seconds or minutes, without the need to share private data with a third party, and without the need to pay a % commission to a rent-extracting centralized corporate entity*. This application can and already is being achieved by recording these domain name properties and their records of ownership on a public distributed ledger - a blockchain. The application of blockchain is as it always has been: creating a decentralized and permissionless ledger. * most blockchains use transaction fee markets to mitigate spam. In this blockchain app, a small fixed transaction fee must be directed to all users upholding the protocol - which, importantly, may include Alice and Bob themselves as token holders, block producers, and/or delegators within the network. Edit: lol at downvotes. author literally asked for an application - the downvotes end up hiding my comment and help to maintain the HN echo chamber.