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: 592
Hash: 5802eaea3c5b5e87181b205f1c0ff67f49eee235accabacfe9ca5889ded62823
Previous block: 02bdd1cfc45c42292437e85002bf214d081602146ec9827bd60fbd23cd709b73
Next block: 0ae0cf030fbe39e44a0e2b7a7188f1f4005b45890119b024d60cfee3ab035789
Weight: 948
Versionhex: 20000000
Version: 536870912
Time: 1564711428
Stripped size: 228
Size: 264
Nonce: 5
Merkle root: 50563aa6afe78273e0aa5c8e1573ce09db71584fc1c4b07e4ff3be48b0d76abd
Median time: 1564711427
Difficulty: 4.656542373906925e-10
Confirmations: 12
Chainwork: 00000000000000000000000000000000000000000000000000000000000004a2
Bits: 207fffff