Using one command, you can deploy Tin Toy and play around with a tiny toy version of the Hive blockchain:
```bash
docker run -d -p 8091:8091 inertia/tintoy:latest
```
This is handy for developers who want to test their applications without having to use the mainnet. It's also nice because you don't need to rely on anyone to run a public testnet. It only takes a few minutes to get up and running.
Once you have your testnet up and running, you can check exactly which version you're on using:
```bash
curl -s --data '{
"jsonrpc":"2.0",
"method":"database_api.get_version",
"params":{},
"id":1
}' http://localhost:8091 | jq
```
This will return something like:
```json
{
"jsonrpc": "2.0",
"result": {
"blockchain_version": "1.25.0",
"hive_revision": "21ca61a2253a01aeca5debdcdb202ff89feae27c",
"fc_revision": "21ca61a2253a01aeca5debdcdb202ff89feae27c",
"chain_id": "18dcf0a285365fc58b71f18b3d3fec954aa0c141c44e4e5cb4cf777b9eab274e"
},
"id": 1
}
```
Also see: [related gist](https://gist.github.com/inertia186/b88e7bfff8862858e54c59392e2bce20)
---
To do this *without* docker, see:
https://developers.hive.io/tutorials-recipes/setting-up-a-testnet.html
I originally announced Tin Toy a couple of years ago:
https://hive.blog/@inertia/tin-toy
There are also some extra things you can do with it if you're doing blockchain development or you want to build from a local branch of `hived` (though this is a slightly dated article):
https://hive.blog/@inertia/how-to-do-iterative-steemd-development-on-a-local-testnet
