The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mzaGu

Height: 593
Hash: 0ae0cf030fbe39e44a0e2b7a7188f1f4005b45890119b024d60cfee3ab035789
Previous block: 5802eaea3c5b5e87181b205f1c0ff67f49eee235accabacfe9ca5889ded62823
Next block: 67502a5b3a7e09d062d06194b68bbda8c798598b5a855a5f37173506507f9789
Weight: 948
Versionhex: 20000000
Version: 536870912
Time: 1564711428
Stripped size: 228
Size: 264
Nonce: 4
Merkle root: df56ea8fc244fd3a4d332c8ca5d86c69579eba20dac62af548fe53156a73231d
Median time: 1564711427
Difficulty: 4.656542373906925e-10
Confirmations: 11
Chainwork: 00000000000000000000000000000000000000000000000000000000000004a4
Bits: 207fffff