I created a contract and did some transactions. I would like to explore the transactions in the sandbox blockchain in my brower (Chrome). But the tx hash is not found in the REMIX VM Debugger http://etherscan.io/remix?txhash= ... ?
You may try Puppeth. It is for managing your own fully featured private Ethereum network, with nodes, genesis set up, tools and monitoring, wallets, faucets, single dashboard, and more. Here is a DevCon3 talk about it: https://www.youtube.com/watch?v=T5RcjYPTG9g&list=PLaM7G4Llrb7xnKb_SeaKZ27opvaIjlBv5